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GTSTRUDL Upcoming Version 32 Release and Future Enhancements

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Steel Design (cont) The Eurocode 3, EN 1993-1-1: 2005 (E) steel design code has been moved to release status. This new code, EC3-2005, ... – PowerPoint PPT presentation

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Title: GTSTRUDL Upcoming Version 32 Release and Future Enhancements


1
GTSTRUDL Upcoming Version 32 ReleaseandFuture
Enhancements
  • Dr. Kenneth M.(Mac) Will
  • GTSUG 2011
  • June 2011
  • Delray Beach, Florida

2
Presentation Outline
  • Status of Version 32
  • New Features in Version 32
  • Future Enhancements

3
Status of Version 32
  • Beta testing scheduled for August.
  • Documentation is in progress.
  • Plan to ship in October.

4
Version 32
5
DBX
  • WRITE CODE CHECK RESULTS has been added. This
    DBX file contains the same data as found in the
    output from LIST CODE CHECK RESULTS. ASCII80 and
    BINARY sequential formats are supported.

6
DBX
  • Syntax
  • WRITE CODE (CHECK) (RESULTS) -(MEMBERS list)
  • Examples
  • WRITE CODE ALL MEMBERS
  • WRITE CODE RES MEMBERS EXISTING - 1 TO 1000

7
DBX
  • The WRITE CABLE FORCES command has been added to
    the DBX feature. This DBX file contains the
    normal stress, the corresponding normal force,
    and the three global element nodal reaction
    components at each node for all active static
    loadings. All documented file formats and access
    modes are supported.

8
DBX (cont)
  • Syntax
  • WRITE CABLE FORCES (MEMBERS list)
  • Examples
  • WRITE CABLE FORCES ALL MEMBERS
  • WRITE CABLE FORCES MEMBERS EXISTING - 1 TO 1000

9
Dynamics
  • The GT64MLANCZOS eigenvalue analysis solution
    method has been implemented, extending
    high-performance sparse-equation eigenvalue
    analysis to 64-bit computer platforms.

10
Dynamics (cont)
  • GT64MLANCZOS is the most powerful version of the
    GTLANCZOS family of eigenvalue analysis solution
    methods (GTLANCZOS, GTSELANCZOS, and now
    GT64MLANCZOS) presently available in GTSTRUDL and
    incorporates the following features

11
Dynamics (cont)
  • The Lanczos iteration process employs an in-core,
    single processor version of the GT64M sparse
    equation solver. Multiple processors and
    out-of-core processing are not available in this
    initial implementation for Version 32.

12
Dynamics (cont)
  • All computations associated with the Lanczos
    iteration process take advantage of 64-bit
    addressing on 64-bit platforms, greatly
    increasing the number of degrees of freedom that
    can be treated and the number of modes that can
    be computed when compared to the GTLANCZOS and
    GTSELANCZOS methods. There is also a modest
    increase of solution speed when compared to the
    GTSELANCZOS method, but this becomes less
    apparent as the number of modes increases.

13
Dynamics (cont)
  • The GT64MLANCZOS method is activated when the
    GT64M option is specified by the ACTIVE SOLVER
    command
  • ACTIVE SOLVER GT64M
  • or when the GT64MLANCZOS method is specified in
    the EIGENSOLUTION PARAMETERS command
  • EIGENSOLUTION PARAMETERS
  • SOLVE USING GT64MLANCZOS

14
Dynamics (cont)
  • Example of problem run using GT64MLANCZOS which
    could not be executed using 32 bit eigensolvers
  • Dynamic DOF 329,994
  • Number of Modes 300
  • Total time to solve 1,693 sec
  • Total time to check solution 182 sec
  • Virtual memory used appx. 6 GB

15
Dynamics (cont)
  • Modest efficiency and performance improvements
    have been made to the GTSES Lanczos eigenvalue
    analysis procedure (GTSELANCZOS). However,
    GTSELANCZOS remains a single-processor, 32-bit
    solver governed by 32-bit virtual memory
    allocation and addressing limitations.

16
Finite Elements
  • A new eight node solid element with incompatible
    modes will be available (IPSLIM). This element
    will offer substantially improved accuracy over
    the existing eight node solid element for
    structures with bending and shear deformation.
    The element will include all of the features
    currently available with the current eight node
    solid (IPSL) element.

17
Finite Elements (cont)
  • A new four node plane stress quadrilateral with
    three dof (including drilling dof) will be added
    Q6CDRL
  • A new four node moderately thick plate bending
    element will be added PBMITC
  • A new four node moderately thick plate element
    (stretching and bending) with 6 dof will be added
    -
  • SBMITC Q6CDRL PBMITC

18
General (cont)
  • PRINT MEMBER LENGTH SORTED LIMIT v now prints the
    total number of members that meet the specified
    limit after the list of member lengths.
  • This only applies to LIMITS with decimal
    numbers, which indicates a length value and where
    the number of members meeting the criterion is
    unknown, and not to LIMITS with an integer
    number, which indicates a specified number of
    member lengths to print.

19
General (continued)
  • Example
  • 4367 gt UNITS CM
  • 4368 gt PRINT MEMBER LENGTH SORTED LIMIT 20.0
  • (output omitted)
  • INFO_PRTMBL - Found 10 members lt
    20.000

20
General (continued)
  • A new option has been added to the PRINT command,
    PRINT MEMBER BETA ANGLES, which allows you to
    print only BETA angles, without the other
    CONSTANTS.
  • The command syntax and a few examples are shown
    on the next slide.

21
General (continued)
  • Syntax
  • Examples
  • PRINT MEMBER BETA ANGLES NONZERO ONLY -
    TOLERANCE 0.1 DEGREES
  • PRINT MEMBER BETA GROUPED COMMAND -FORMAT

22
General (continued)
  • A GLOBAL option has been added to LIST FORCES.
    This option will print member forces in the
    global reference frame, instead of the standard
    local (member) reference frame.
  • Syntax
  • LIST FORCES (GLOBAL)

23
General (continued)
  • Two new options have been added to the
  • LIST JOINT FORCES command GLOBAL (WITH TOTAL)
    and MEMBERS m_list.
  • The GLOBAL option causes the member and element
    forces to be rotated from the local coordinate
    system to the global coordinate system.

24
General (continued)
  • In the case of members with ECCENTRICITIES,
    the forces are transformed from the flexible end
    of the member to the joint - therefore LIST JOINT
    FORCES GLOBAL will not match LIST FORCES even
    after resolving the coordinate systems for
    members with ECCENTRICITIES.

25
General (continued)
  • The WITH TOTAL option will print the summation
    of all listed members and elements for each DOF
    for each joint and active load. The GLOBAL option
    always outputs all six global DOF, instead of
    being restricted to member DOF.
  • The MEMBERS m_list option restricts the printed
    forces to members or elements in m_list.

26
General (continued)
  • Syntax of the modified command

27
General (continued)
  • 191 gt LIST JOINT FORCES GLOBAL JOINT 3
  • -------------------------------------------------
    --------------------------------------------------
    --------------------------------
  • --- Loading - 1
  • -------------------------------------------------
    --------------------------------------------------
    --------------------------------
  • GLOBAL joint forces output by loading
  • MEMBER/ REF
  • /-JOINT-/-ELEMENT-/-FRAME-/---------------------F
    ORCES---------------------/---------------------MO
    MENTS-------------------/--ECC-/
  • FORCE X
    FORCE Y FORCE Z MOMENT X
    MOMENT Y MOMENT Z
  • 3 1 GLOBAL 6.119
    6.148 0.000 0.000
    0.000 11.185 NO
  • 3 2 GLOBAL 6.119
    6.148 0.000 0.000
    0.000 -11.185 NO
  • 3 3 GLOBAL -6.119
    -6.148 0.000 0.000
    0.000 11.476 NO
  • 3 4 GLOBAL -6.119
    -6.148 0.000 0.000
    0.000 -11.476 NO

28
General (continued)
  • 193 gt LIST JOINT FORCES GLOBAL WITH TOTAL
    JOINT 3 MEMBERS 1 2
  • -------------------------------------------------
    --------------------------------------------------
    --------------------------------
  • --- Loading - 1
  • -------------------------------------------------
    --------------------------------------------------
    --------------------------------
  • GLOBAL joint forces output by loading
  • MEMBER/ REF
  • /-JOINT-/-ELEMENT-/-FRAME-/---------------------F
    ORCES---------------------/---------------------MO
    MENTS-------------------/--ECC-/
  • FORCE X
    FORCE Y FORCE Z MOMENT X
    MOMENT Y MOMENT Z
  • 3 1 GLOBAL 6.119
    6.148 0.000 0.000
    0.000 11.185 NO
  • 3 2 GLOBAL 6.119
    6.148 0.000 0.000
    0.000 -11.185 NO
  • ---------------
    --------------- --------------- ---------------
    --------------- ---------------
  • Totals 12.237
    12.295 0.000 0.000
    0.000 0.000

29
General (continued)
  • The RENAME command has been added. This command
    allows you to change the name of an existing
    component - joint, member/element, load or group.
  • Syntax
  • RENAME type old_name new_name
  • where type is the type of component to rename.
    The allowable types are
  • JOINT (or NODE), MEMBER (or ELEMENT), LOAD,
    GROUP.

30
General (continued)
  • The MEMBER PROPERTIES Command has been enhanced
    giving the user the ability to define member
    properties for Channels and Polygonal Tubes by
    specifying their dimensions.
  • The following are examples of the two new
    options for the MEMBER PROPERTIES Command

31
General (continued)
  • MEMBER PROPERTIES
  • 1 TO 10 CHANNEL TOTAL DEPTH 16.97 -
  • WEB THICKNESS 0.585 FLANGE WIDTH 10.425 -
  • FLANGE THICKNESS 0.985
  • 11 TO 20 POLYGONAL TUBE -
  • DIAMETER BETWEEN FLATS 14.35 -
  • NUMBER OF SIDES 8 -
  • THICKNESS 0.985

32
General (continued)
  • Members whose properties have been defined
    through these options can be code checked by the
    GTSTRUDL Codes that support such cross-sections.
    Also, these new options are available for
    prismatic and variable members.

33
General (continued)
  • The CALCULATE SOIL SPRINGS command has been
    enhanced to
  • 1) Allow a single KS value without an element
    list, which indicates that GTSTRUDL should find
    all elements and element faces that lie on the
    specified plane and create an assumed element
    list. This makes adding soil springs to an
    entire slab on one level much simpler.

34
General (continued)
  • 2) Added a NO SUPPORT CHECK option to the
    COMPRESSION ONLY nonlinear springs capability.
    NLS elements will be added to the model without
    regard to the current support status of the
    involved joints as opposed to the current
    requirement that soil springs can be added only
    to joints with the appropriate DOF (FX, FY or FZ)
    restrained. This allows you greater flexibility
    in modeling, but leaves the responsibility of
    creating a stable analysis model up to you. An
    informational message is generated if the NO
    SUPPORT CHECK option is used, but the appropriate
    DOF is fixed - which will result in the created
    NLS being nonfunctional

35
General (continued)
  • 3) The name of the generated NLS has been added
    to the output if the COMPRESSION ONLY option is
    used. In addition, the informative comments
    output below the spring value report now reflect
    the actual names of the generated NLS so they can
    be copied from the output to be added to your
    input or pasted into the Command window.

36
General (continued)
  • A new command will be implemented to make it
    easier for the user to specify the Beta angle for
    members with eccentricities in planes which are
    not parallel to a global plane. The new command
    is
  • ACTIVE BETA ANGLE DEFINITION -
  • With JOINT TO JOINT OR ECCENTRIC
  • option

37
GTMenu
  • Member loads on cable elements can now be
    displayed.
  • The Inquire dialog no longer disappears when the
    Graphics window is activated.
  •  

38
GTMenu (cont)
  • Force Diagrams and value labels can now be
    rotated according to the Beta Angles on Members.
  • A FY Diagram is plotted in the local xy plane
    by default a FZ Diagram is plotted in the local
    xz plane by default a MY Diagram is plotted in
    the local xz plane by default and a MZ Diagram
    is plotted in the local xy plane by default

39
GTMenu (cont)
  • The GENERATE INPUT FILE feature now includes
    NONLINEAR EFFECTS, NONLINEAR SPRING PROPERTIES
    and NONLINEAR SPRING ELEMENT commands. In
    addition, OBJECT commands are included along with
    group titles .
  • "TYPE RMS" and "TYPE ABS" Load Combinations are
    now translated and put into the input file.

40
GTMenu (cont)
  • Finite elements are now labeled closer to their
    centroid.
  • When checking for duplicate joints, the duplicate
    joints, members, or elements are now labeled on
    the screen.
  • When checking for floating joints, the floating
    joints are now labeled on the screen.

41
GTMenu (cont)
  • Redraw solid will display the nine Unistrut
    sections in the GTSTRUDL Unistrut table as shown
    on the next slides.

42
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43
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44
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45
GTMenu (cont)
  • A new option has been added to allow you to
    create Section Property Groups when you are
    creating new members. The new option to the
    Member Properties dialog is shown

46
GTMenu (cont)
  • When Refining a Finite Element Mesh and changing
    to a higher order element, the mapping shown on
    the next slide is now followed which shows the
    lower order element and the new higher order
    element.

47
GTMenu (cont)
  • The following eight cases are used in the
    mapping
  • (1) a plane stress triangle maps to type 'LST'
  • (2) a plane stress quad maps to type 'IPQQ'
  • (3) a plate bending triangle produces an error
    saying unavailable
  • (4) a plate bending quad maps to type 'IPBQQ'
  • (5) a tridimensional 6 node prism maps to type
    'WEDGE15'
  • (6) a tridimensional 8 node brick maps to type
    'IPSQ'
  • (7) a plate triangle produces an error saying
    unavailable
  • (8) a plate quad produces an error saying
    unavailable.

48
GTMenu (cont)
  • A graphical interface to the LIST SUM FORCES
    command has been implemented. This works by
    starting with a line or plane of joints that cut
    the structure. (A line cuts a 2-D structure
    whereas a plane is necessary to specify a cut of
    a 3-D structure.) Next, all members and elements
    above or below the cut are marked. Then
    individual members or elements can be deselected.
    Finally the forces are summed for this
    specification, producing textual output.

49
GTMenu (cont)
50
GTMenu (cont)
cut
results
51
GTMenu (cont)
  • When refining a finite element grid, there is now
    an option to split any framing members in the
    same way automatically.

52
GTMenu (cont)
After mesh refinement with split members labeled
Before mesh refinement with members labeled
53
GTMenu (cont)
  • Mode shapes on finite element meshes may now be
    contoured.

54
Contour of z component of Mode 1
55
GTMenu (cont)
  • Additional steel design parameters may now be
    displayed
  • LX, FRLX, FRLY, FRLZ, FRUNLCF, TBLNAM, Yield
    Strength, Tensile Strength
  • The new dialog is shown on the next slide.

56
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57
GTMenu (cont)
  • Dynamic mass specified using the INERTIA OF
    JOINTS command can now be displayed.
  • An example is shown on
  • the next slide.

58
Dynamic mass from Inertia of Joints from Load
command
59
GTMenu (cont)
  • An automatic mesh algorithm for 2D elements has
    been implemented (GTMesh) to mesh structures
    using only the structure outline including
    internal boundaries and line constraints.
  • The new meshing dialog is shown on the next
    slide with several examples on subsequent slides.

60
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61
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62
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63
Model with External and Internal Boundary (uses
Constructions Points and Lines
64
Resulting Mesh
65
GTMenu (cont)
  • The user is now able to change the colors used
    for contour plots.
  • Different colors can be used for members and
    finite elements for the deformed structure, mode
    shapes and transient animation as shown on the
    next slide.

66
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67
GTMenu (cont)
  • GTMenu can now produce selected result graphs for
    a selected member (e.g., for inclusion in a
    report). The results available for selection are
    local y displacement, local z displacement and
    local force and moment diagrams and envelopes.
    The new dialog and an example of the Graph Result
    window are shown on the next slides.

68
GTMenu
69
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70
GTMenu (cont)
  • A right mouse click can now be set so that only
    joints, members or elements are selected. This
    is retained unless you change it from the Inquire
    button. The right mouse click setting is now
    displayed at the top of the Graphics Display as
    shown on the next slide.

71
GTMenu (cont)
72
GTMenu (cont)
  • A new rectangular fencing selection mode has been
    implemented on the Mode Bar. There are two
    options available with the Rect. Fence as shown
    below

73
GTMenu (cont)
  • Finite element edges and faces may now be labeled
    as shown on the revised Display Model dialog on
    the next slide.

74
GTMenu (cont)
New options on Display Model dialog to label
finite element edges and faces
Example of Edge Labeling
75
Nonlinear
  • A new optional parameter, NGP iNGP, has been
    added to the NONLINEAR EFFECTS, PLASTIC SEGMENT
    option that provides for the specification of
    either two or three Gauss quadrature points for
    the numerical integration of the plastic segment
    equilibrium equations. The specification of NGP
    3 provides for improved plastic segment accuracy
    over a greater range of segment lengths when
    compared to that associated with NGP 2, the
    default value that was originally implemented as
    a fixed constant.

76
Nonlinear (cont)
  • Example
  • NONLINEAR EFFECTS
  • PLASTIC SEGMENT NGP 3 END -
  • FIBER GEOMETRY NTF 2 NTW 1 NBF 14 ND 12
  • LH 10.0 -
  • STEEL FY 50.0 FSU 50.00001 ESU 1.0 MEMBER -'COL4'
    'COL8'

77
Nonlinear (cont)
  • In previous versions, member loads could not be
    applied to members for which the PLASTIC SEGMENT
    nonlinear effect was specified. This restriction
    has been removed and all member load types are
    now supported for the PLASTIC SEGMENT nonlinear
    effect.

78
Offshore
  • The GTSelos Stream Function Wave model has been
    updated with the addition of the Fenton nonlinear
    wave option. Two stream function wave models are
    now available, the Dean model and the Fenton
    model.

79
Offshore (cont)
  • The offshore steel design code APIWSD21, which is
    based on the API Recommended Practice 2A-WSD (RP
    2A-WSD) Twenty-First Edition steel design code
    for Basic Stresses, Hydrostatic Pressure, and
    Punching Shear, has been moved to release status.
    The documentation for the APIWSD21 code may be
    found by selection the Help menu and then
    Reference Documentation, Reference Manuals,
    Offshore Loading, Analysis, and Design, and then
    APIWSD21 API RP 2A-WSD, 21st Edition in the
    GTSTRUDL Output Window.

80
Offshore (cont)
  • APIWSD21 punching shear check now can perform a
    code check for joints with thickened cans.
    Joints with thickened cans are discussed in the
    Section 4.3.5 of the API WSD 21st Edition. There
    are four new parameters applicable to the joints
    with thickened cans option.

81
Offshore (cont)
  • A new International Standard ISO 199022007(E),
    First Edition, 2007-12-01, Petroleum and natural
    gas industries Fixed steel offshore structures
    has been implemented as a prerelease feature.
    The GTSTRUDL code name for this new offshore code
    is 19902-07. The 19902-07 code performs Basic
    stresses, Hydrostatic Pressure, and Punching
    Shear stresses check according to International
    Standard ISO 199022007(E). This new code,
    19902-07, may be used to select or check Circular
    Hollow Sections (Pipes).

82
Static Analysis
  • Modest efficiency and performance enhancements
    have been made to the GTSES static analysis
    sparse solver and the GTSELANCZOS sparse equation
    Lanczos eigenvalue solver, both 32-bit solvers.
    Execution speeds may increase by as much as 30
    and the solvers are more robust, better able to
    complete satisfactory solutions for less
    well-conditioned models.

83
Steel Design
  • Efficiency improvements have been made to both
    the member selection and code checking functions
    when the external file solver is active and
    analysis results are stored in files on external
    storage devices. In particular, virtual memory
    demands have been reduced, enabling the CHECK
    and SELECT commands to handle the required
    numbers of members and loading conditions more
    efficiently.

84
Steel Design (cont)
  • The Eurocode 3, EN 1993-1-1 2005 (E) steel
    design code has been moved to release status.
    This new code, EC3-2005, may be used to select or
    check any of the following shapes

85
Steel Design (cont)
  • Design for axial force and bi-axial bending
  • I shapes
  • Circular Hollow Sections (Pipes)
  • Rectangular Hollow Sections (Structural Tube)
  • Solid Round Bars
  • Design for axial force only
  • Single Angles
  • Double Angles

86
Steel Design (cont)
  • Efficiency improvements have been added to the
    EC3-2005 code since it was implemented as a
    prerelease feature. The time to code check
    (CHECK) or design (SELECT) for jobs with large
    number of loadings have been reduced.

87
Steel Design (cont)
  • Under previous versions of GTSTRUDL, the message
    below indicates that nonlinear analysis is
    required for code checking based on LRFD codes
  • WARNING_STTECC -- Code check based on the
    LRFD code requires nonlinear analysis. Nonlinear
    analysis has not been performed for the following
    loadings
  • According to the AISC 13th Edition Code,
    nonlinear analysis is required regardless of the
    method (LRFD or ASD) used. For GTSTRUDL Version
    32, the message above has been modified to
    reflect this AISC 13th Edition requirement
  • WARNING_STTECC -- Code check based on the
    AISC13 code requires nonlinear analysis.
    Nonlinear analysis has not been performed for the
    following loadings

88
Steel Design (cont)
  • When a value of YES has been specified for the
    parameter TowerCK, the slenderness ratios are
    checked according to the transmission tower code
    provisions. This option is applicable to the
    AISC13 and ASD9 codes for single and double angle
    cross-sections and was a new option that was
    added to Version 31.
  • In Version 32, this option has been modified
    so that the AISC13 or ASD9 slenderness ratios
    L/r, KL/r, B7 TEN, and B7 COMP are checked as
    informative provisions rather than pass/fail
    conditions. This means that as of Version 32,
    only the transmission tower slenderness ratios
    SLENT and SLENC are checked as pass/fail
    provisions. Previously, all slenderness ratios
    L/r, KL/r, B7 TEN, B7 COMP, SLENT, and SLENC
    (transmission tower, AISC13, and ASD9) were
    checked as pass/fail provisions.

89
Steel Design (cont)
  • Additional error checking for parameters CODE,
    TBLNAM, and STEELGRD has been added into the
    steel design parameter command. The user
    specified parameter values for the parameters
    CODE, TBLNAM, and STEELGRD are now checked
    against accepted values and if the specified
    value is incorrect, an error message is given and
    the scan mode is set.

90
Steel Tables and GTTABLE
  • The output of the Table print commands will no
    longer overflow the output field and be printed
    as when the value is larger than
    the reserved field. The values that are too
    large for the reserved fields are automatically
    converted to an exponential format before being
    printed.

91
Base Plate
  • Commands for anchor checking by ACI 318-05
    Appendix D have been implemented. The commands
    are shown on the next slides and will be further
    discussed in a later presentation.

92
Base Plate (cont)
93
Base Plate Wizard
  • Two new anchor patterns
  • Circle/arc Add anchors in a circular arc up to
    a full circle
  • Grid - like the current 4 corners edges
    option, but fills in the interior anchor
    positions also, not just the perimeter.

94
Base Plate Wizard (cont)
  • Selective weld lines
  • Currently all lines in an attachment are
    considered as welded to the base plate. A new
    feature will be added to designate specified
    lines as not welded. These unwelded lines will
    be modeled as having a compression-only
    connection to the base plate, either with
    compression-only dummy members or stiff,
    compression-only NLS elements.
  •  

95
Base Plate Wizard (cont)
  • New custom attachment dialog
  • A new dialog will allow you to modify a standard
    attachment from the attachment file or create a
    new attachment. Included will be an ability to
    indicate which lines are welded to the base
    plate.

96
Future Enhancements
97
Base Plate
  • X or Y rotation for attachments to model
    attachments not parallel to Z, such as angled
    brace legs for pipe supports. 
  • Arbitrary load points (X,Y,Z) for attachments. 
  • Decimal place control in results output. 
  • Optional LIST SUM FORCES results for Constraints
    to allow easy cut line calculations.

98
Base Plate (cont)
  • Improved Loading dialog. 
  • Batch processing of .gtbp files. 
  • Optional output of load names causing the largest
    interaction value for anchors in Results
    Summary. 
  • Add X, Y coordinates to stress results dialog.

99
Dynamic Analysis
  • Implement GTSES/GT64M versions of linear direct
    integration (physical) transient analysis.
  • Computation of minimum seismic load according to
    latest IBC provisions.
  • Implement the Lindley-Yow response spectrum
    rigid-periodic mode combination method as a
    companion to the presently available Gupta method.

100
Dynamic Analysis (cont)
  • Response spectrum analysis will keep a record of
    eigenvalue analysis results on a load-by-load
    basis. This will be particularly useful when the
    results of different eigenvalue analyses are used
    for different response spectrum load analyses in
    the same job, and mode combinations such as CQC,
    which is a function of damping ratio and
    frequency, are used.

101
Finite Elements
  • Implement local element coordinate system results
    processing (text reports and graphical display of
    stress contours) for selected planar elements, in
    particular the SBHQ and SBHT family of plate
    elements. This is particularly convenient and
    useful for structures formed by surfaces of
    revolution.

102
General
  • Add sorting and limits to LIST CODE CHECK RESULTS
  • PRINT JOINT CONNECTIVITY and form a Group of the
    members and elements incident on joints in a
    list.
  • PRINT INCIDENT JOINTS MEMBERS/ELEMENTS command to
    print the joints incident to a list and create a
    GROUP.
  • When second and subsequent JOINT LOADS are
    applied to a joint in a loading condition, the
    WARNING will change to INFO.

103
General (cont)
  • LOCATE FLOATING JOINTS ( (AND) -REMOVE )
  • Only joints that are not attached to any member,
    finite element, nonlinear spring or rigid body
    will be considered as possible floating joints.
    If a joint is used as a BETA REFERENCE JOINT it
    will not be considered floating.
  • LOCATE DUPLICATE ELEMENTS ( (AND) REMOVE (ADD
    LOADS) ).
  • Similar to LOCATE DUPLICATE MEMBERS.
  • LOCATE INTERSECTING MEMBERS list TOL v
  • Detect members within a tolerance (TOL) of each
    other to locate crossing members that may look
    correct graphically but should actually have a
    common joint at their intersection.
  • Add finite elements to LOCATE INTERFERENCE
    JOINTS.

104
General (cont)
  • Add the ability to write or change support status
    as part of the CALCULATE SOIL SPRINGS command.
    Currently, user must have already specified
    joints as supports and joint releases.
  • The AASHTO HL-93 truck will be added to the
    Moving Load Generator.
  • A new option will be added to the PRINT MEMBER
    PROPERTIES command to print all cross-sectional
    property information.

105
General (cont)
  • A general-purpose zero-length, linear spring
    element is planned for implementation by the
    specification of a symmetric stiffness matrix in
    terms of Kaa, Kba, and Kbb, similar to the method
    used to specify superelement stiffness matrices.

106
General (cont)
  • AREA LOAD enhancements
  • Check for interference joints and intersecting
    members in plane before attempting to locate
    bounded areas.
  • Improve error reporting
  • List of 0.0 length members
  • Start joint for "illegal configuration" to help
    with debugging.
  • Add IGNORE NONORTHOGONAL MEMBERS option.
  • Ignore members not within specified angle of
    global axis so bracing doesnt need to be
    inactivated.
  • PLOT option - create a Scope Editor file like
    the dialog display with shaded bounded areas.

107
General (cont)
  • Develop 64 bit version of GTSTRUDL.

108
GTMenu
  • Add Undo to remove duplicate joints dialog to
    avoid corrupting model due to using a tolerance
    which was too large.
  • Improve efficiency when displaying large models.
  • Graphically specify Area Loads in GTMenu.

109
GTMenu (cont)
  • Addition of the following items to the input file
    created by GTMenu
  • Dynamic Loadings
  • Eigen Parameters
  • Dynamic Modal Damping Data
  • Nonlinear Solution Parameters
  • Cable Network Data
  • Nonlinear and Dynamic Analysis solution commands

110
GTMenu (cont)
  • Add a general fencing option to allow the user to
    specify a non-rectangular fence.
  • Add the ability to apply filters to the model to
    display only entities corresponding to the active
    filter.
  • Automatically create Views such as for every
    floor and every vertical plane of building.
    Also, develop command that will do this.

111
GTSTRUDL Output Window
  • Track Warning messages like Error messages.
    Pop-up a dialog with Error and Warning count.
    List Error or Warning output lines in a dialog,
    click on an Error or Warning and the output
    cursor moves to that line in the output listing.

112
Nonlinear Analysis
  • The nonlinear member end connection and plastic
    hinge models will be supported by nonlinear
    dynamic analysis.
  • Add nonlinear viscous damper element for
    nonlinear dynamic analysis

113
Nonlinear Analysis (cont)
  • Efficiency improvements are planned for the GTSES
    sparse equation solver used by nonlinear static
    analysis, similar to those implemented in Version
    32 for the GTSES linear static analysis solver.
  • A GT64M sparse equation solver is planned for
    nonlinear static analysis.

114
Nonlinear Analysis (cont)
  • Higher order improvements are planned for the
    nonlinear geometric versions of the plane and
    space frame member.
  • The implementation of a nonlinear geometry model
    is planned for at least one solid finite element,
    probably the IPSL element.

115
Offshore
  • Implement fatigue analysis based on transient
    analysis results.

116
Offshore (cont)
  • The efficiency of the fatigue load analysis
    procedures will be enhanced by the addition of an
    option that provides for the selection of the
    GTSES sparse equation solver for linear static
    analysis.
  • A new GTSELOS feature is planned whereby
    additional tables express the drag parameters CD
    and CM as function(s) of one or more of the
    existing pipe member diameter, water depth,
    Reynolds number parameters, plus the additional
    parameters roughness and Keulegan-Carpenters
    Number.

117
Offshore (cont)
  • GTStrudl fatigue analysis is presently restricted
    to the use of a single S-N curve that applies to
    all members undergoing a given fatigue analysis.
    An improvement to this procedure is planned
    whereby multiple S-N curves can be defined as
    functions of pipe member wall thickness, a
    reference thickness, a thickness exponent, and a
    stress range and assigned individually to
    members for the fatigue analysis.

118
Offshore (cont)
  • An Influence Matrix approach to perform hotspot
    fatigue analysis of connection details other than
    simple tubular joints is planned.
  • An additional fatigue analysis results reporting
    function is planned that provides for the
    tabulation of the most severe fatigue damage as a
    function of wave height and wave period in
    addition the present report given as a function
    of wave direction.
  • A new fatigue analysis report that states the
    center of damage for each of the three sea state
    parameters wave height, wave period, and wave
    direction is planned.

119
Reinforced Concrete
  • The ACI 318-08 code will be implemented for beam
    and column design.
  • The DESIGN SLAB command will be brought to
    release status.

120
Steel Design
  • Add new parameter called DesLoads which can be
    used to specify design loads.
  • Add an option to create a group containing the
    critical loads at the end of a CHECK or SELECT
    command.

121
Steel Design
  • Add a new option to the CHECK and SELECT commands
    to print the load names and section location used
    for the code check.
  • Displacement Constraint Design Procedure will be
    available to select members to satisfy joint
    displacement constraints. The new GTSES external
    file solver will be added as an option.

122
Steel Design (cont)
  • Steel design based on the AISC 14th Edition for
    all rolled cross-sections.
  • Steel design based on the Seismic provisions of
    the AISC 14th Edition.
  • Add a new option into the SELECT command to
    design the FAILED members.
  • SELECT ALL FAILED MEMBERS

123
Steel Design (cont)
  • Modify the FOR MAXIMUM ENVELOPE VALUES option of
    the SELECT and CHECK command when the
    cross-section is an unsymmetrical cross-section.

124
Steel Design (cont)
  • Add a FOR MAXIMUM DIAGRAM VALUES option to the
    SELECT and CHECK command. This option creates a
    single maximum force values for each individual
    load case. When this option is used, each
    artificial load case will have a single force
    values which has the maximum values of individual
    forces and moments no matter where the maximum is
    located along the members length.

125
Steel Tables
  • Implement AISC 14th edition tables.

126
Interfaces to Other Programs
  • AutoCAD interface via DXF converter
  • Intergraphs Frameworks
  • Intergraphs SmartPlant 3D CIS/2
  • Structural Desktop by Structural Desktop, Inc
  • Tekla Structures
  • ATLAS by 3DR Engineering Ltd. in Europe
  • Other CAD programs which support DXF or CIS/2

127
Your assistance is needed to help us improve
GTSTRUDL in your Committee meetings
  • Please provide us with a prioritized list of the
    features that you would like to see. Please be
    specific especially when requesting model wizard,
    design codes (which codes and which cross
    sections) or datasheet requests.
  • Sketches of wizards, output, and graphical
    displays help us tremendously.
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