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GTSTRUDL Version 33 Release and Future Enhancements

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Steel Design (cont) ... use the Advanced Plate Stresses menu Base Plate ... specification for safety-related steel structures for nuclear facilities has been added. – PowerPoint PPT presentation

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Transcript and Presenter's Notes

Title: GTSTRUDL Version 33 Release and Future Enhancements


1
GTSTRUDL Version 33 ReleaseandFuture
Enhancements
  • Dr. Kenneth M.(Mac) Will
  • GTSUG 2013
  • June 2013
  • Charlotte, North Carolina

2
Presentation Outline
  • Version 32 shipped in August 2012
  • New Features in Version 33
  • Future Enhancements

3
Status of Version 33
  • Running QA and completing documentation. QA will
    be performed on the following 32 bit and 64 bit
    operating systems Windows XP, Windows Vista,
    Windows 7 and Windows 8.
  • Plan to ship in September.

4
Version 33
5
Dynamics
  • The execution speed and memory management have
    been improved for the GTSELANCZOS eigenvalue
    solver.
  • The next slide illustrates the improvements on a
    large model.

6
Eigenvalue Analysis Large Models GTSELANCZOS
Efficiency Improvements
Material Concrete Element Type SBHQ6 Number
of Elements 60,744 Number of Joints
59,736 Number of DOFs 354,408
7
Eigenvalue Analysis Large Model GTSELANCZOS
Efficiency Improvements
GTSELANCZOS, Version 32 Total time to solve
for 100 modes 445 seconds GTSELANCZOS, Version
33 Total time to solve for 100 modes 118
seconds
8
Dynamics (cont)
  • The maximum allowable number of time points used
    for the acceleration time history integration
    procedure of the CREATE RESPONSE SPECTRUM command
    has been increased from 1 million to 4 million.

9
General
  • The external file solvers GTSES, GT64M,
    GTSELANCZOS and GT64MLANCZOS now use the folder
    GTSresults for all external files.
    GTSresults is created, if needed, in the
    current GTSTRUDL Working Directory. This results
    folder name is fixed and no user control is
    provided. This change will reduce the clutter
    in the Working Directory when the external file
    solvers are used.

10
General (cont)
  • Note To be able to restore external file results
    saved (using the SAVE command) under version 32
    or earlier and restored under version 33 (using
    the RESTORE command), before running GTSTRUDL 33
    create a folder named GTSresults and copy all
    the external files to the new folder.

11
General (cont)
  • Prerelease features (Chapter 5 of the Release
    Guide) will now output a warning message
    indicating they are in prerelease status. This
    change allows Quality Assurance customers a
    simple way to be aware if they are using
    prerelease features. An example is shown on the
    next slide.

12
General (cont)
  • Command
  • DESIGN SLAB USING WOOD AND ARMER -
    AVERAGE JOI 1 11 ELE 1
  • Output
  • WARNING_CRCCMN - This feature is a
    Prerelease feature. User feedback and
    suggestions are welcome.

13
General (cont)
  • A new ALL option has been added to the list
    option of the PHYSICAL MEMBER COMPLIANCE CHECK
    command. This option allows users to check the
    compliance of all physical members in a single
    command. This feature is documented in the
    Section 2.1.2.10.2 of Volume 1.

14
General (cont)
  • The CREATE AUTOMATIC command has two new
    features
  • First is the option to create FORM LOADS, which
    are independent loads suitable for nonlinear
    analysis.
  • Second is the option to use multiple SETS of
    EXCLUSIVE loads, which allow you to create
    loadings by combining one load (or load group)
    from each SET. For example, this gives you the
    ability to create all combinations of Live and
    Wind loads by putting the different load types in
    different SETs.

15
General (cont)
  • New syntax for the Create Automatic command

16
General (cont)
  • Example of the revised Create Automatic command
    with multiple EXCLUSIVE commands in different
    SETS
  • CREATE AUTOMATIC LOAD COMBINATIONS INITIAL 101
  • CONSTANT DL 1.4
  • EXCLUSIVE LL1' LL2' LL3' LL4' 1.6 Assumed
    SET 1
  • EXCLUSIVE SET 2 WL1' WL2' 1.7
    Specified SET 2
  • END
  • The above commands will create 8 load
    combinations as shown on the next slide.

17
General (cont)
18
General (cont)
  • The AREA LOAD command has been enhanced with two
    new features for ELEVATION. The EXCEPT option
    will now accept multiple regions, allowing the
    specification of all the holes (stairwells,
    atria, etc.) in a floor in a single ELEVATION
    command.

19
General (cont)
  • A new option IGNORE MEMBERS has been added to
    allow the specification of members to not include
    in the AREA LOAD calculations. Previously these
    unloaded members, such as braces, needed to be
    INACTIVE before issuing the AREA LOAD command.
  • Examples are shown on the next slides.

20
General (cont)
  • ELEVATION 36.75 EXCEPT LIMITS -JOINTS 345 789
    LIMITS MEMBERS -
  • 45 78 124 158 VALUE TWO WAY 100.0
  • Two holes are not loaded, the first bounded by
    joints 345 and 789 and the second outlined by
    members 45, 78, 124 and 158.

21
General (cont)
  • ELEVATION 36.75 IGNORE MEMBERS -B1' TO B12'
    VALUE TWO WAY 100.0
  • The areas and loadings are determined without
    considering bracing members B1' to B12'. These
    members will not be loaded and their
    ACTIVE/INACTIVE status is not affected.

22
General (cont)
  • RESTORE will now internally re-issue a LARGE
    PROBLEM SIZE n command if such a command had
    been given when the SAVE command was executed.
    This only applies to Version 33 and later.
  • .gts files created under earlier versions can
    be restored but no automatic LARGE PROBLEM SIZE
    command will be generated.

23
General (cont)
  • If the LARGE PROBLEM SIZE command is generated,
    an INFO message is printed
  • INFO_XXREST - LARGE PROBLEM SIZE 5 restored.

24
GTSTRUDL Output Window
  • New dialog for Automatic Load Combinations and
    Automatic Form Loads
  • Supports all features of revised Create Automatic
    Load Combination and Form Load command
  • Revised Dialog is shown on next slide

25
Form Loads and Load Combinations
Multiple SETs of Exclusive Loads
26
GTSTRUDL Output Window (cont)
  • The Console and Scope Environment buttons have
    been removed from the Button Bar. The Scope
    Environment is no longer a supported feature and
    the Console button is no longer needed to return
    from the Scope Environment window. The GTMenu
    button will remain on the Button Bar as shown on
    the next slide.

27
GTSTRUDL Output Window (cont)
  • Removal of the Console and Scope Environment from
    the Button Bar
  • Before Version 33
  • Version 33

Note You may still access the Scope Environment
with the Plot Device Scope command
28
GTSTRUDL Output Window (cont)
  • The Area Load dialog has a new option in the
    Loading menu Print Preview and Edit. This
    option sends the Area Load display to the Scope
    Editor where you can edit and print the elevation
    display.
  • The Print Preview and Edit option in the
    pulldown menu is shown on the next slide

29
GTSTRUDL Output Window (cont)
30
GTSTRUDL Output Window (cont)
  • A new Warning Message indicator has been added to
    the Button Bar as shown below

W
New Warning Message Indicator (in yellow when
activated)
31
GTSTRUDL Output Window (cont)
  • By clicking on the highlighted W, a list of the
    Warning Messages will pop-up. You can jump to
    the occurrence of the message in the output by
    clicking on a specific message.
  • An example of the pop-up list of warning messages
    is shown on the next slide

32
GTSTRUDL Output Window (cont)
33
GTMenu
  • Display Model will now display the cross section
    for members that have properties created using
    the Member Property Channel and Polygon
    cross-section specs. The Polygon cross sections
    will be drawn as pipes.
  •  

34
GTMenu (cont)
  • The time to display wire frame models which
    contain a large number of finite elements has
    been greatly reduced.
  • The time for Redraw Solid has been greatly
    reduced for large models.
  • The time to Exit GTMenu and save the changes has
    been reduced for models which contain a large
    number of solid elements.

35
GTMenu (cont)
  • As a result of the improvements to the wire frame
    display of models which contain a large number of
    finite elements, the time for Print Preview in
    the Scope Editor has been significantly decreased
    due to the reduced number of lines which are now
    being drawn. An example of the Scope Editor
    before and after these changes is shown on the
    next two slides.

36
Version 32 285,032 elements (lines symbols)
37
Version 33 188,013 elements (lines symbols) 34
reduction
38
GTMenu (cont)
  • The global axes in the display area are now
    displayed as 3D arrows as shown below

39
GTMenu (cont)
  • The location for the display of the global axes
    may be changed to the origin of the global
    coordinate system using the revised Set Display
    Options dialog as shown on the next slide.

40
New Global Axis Location option
41
Global Coordinate System at Origin
42
GTMenu (cont)
  • If a window is created without the global origin
    in the window, the Global Axes will still be
    displayed in the window.

43
GTMenu (cont)
  • A new feature has been implemented to facilitate
    the location of a joint, member or element on
    large models or on models with members and
    elements closely spaced. You may activate this
    feature either from the Annotate Model button on
    the Button Bar or by entering LJ, LE or LM when
    the Display Area is active.

44
GTMenu (cont)
  • This new feature will draw concentric octogons of
    decreasing size around the joint, member or
    element with the label on the joint, member or
    element finally shown. The revised Annotate
    Model Dialog is shown on the next slide.

45
New Locate option on Annotate Model dialog
46
Nonlinear
  • Nonlinear dynamic analysis has been enhanced to
    detect when a solution is diverging and to issue
    a warning message.

47
Offshore
  • The SAVE command now saves the data computed by
    the COMPUTE FATIGUE LJF command. This
    enhancement enables the COMPUTE FATIGUE LJF
    command and a subsequent PEFORM FATIGUE ANALYSIS
    command to be executed in consecutive jobs
    separated by SAVE and RESTORE commands, the first
    job executing the COMPUTE FATIGUE LJF command and
    ending with a SAVE command and the second job
    beginning with a RESTORE command and executing
    the PERFORM FATIGUE ANALYSIS command.

48
Offshore (cont)
  • A new option has been added to the PRINT FATIGUE
    command as follows
  • PRINT FATIGUE NUMBER OF WAVES
  • The PRINT FATIGUE NUMBER OF WAVES command prints
    a tabular report of the number of waves of the
    various distinct wave height-period pairs in each
    of the specified wave directions. The format of
    the new report is shown on the next slide.

49
(No Transcript)
50
Offshore (cont)
  • A new DAMAGE option has been added to the LIST
    FATIGUE command as follows

51
Offshore (cont)
  • This command produces a report of the fatigue
    damage in a table ordered on wave height/period
    and direction. The report is produced for the
    critical point (point with the highest damage) at
    the end of each brace connected to each specified
    joint. This report also includes the center of
    damage with respect to wave height/period for
    each direction. An example of the format of the
    new report is shown on the next slide.

52
(No Transcript)
53
Offshore (cont)
  • The following fatigue analysis commands have been
    enhanced to support the use of the GTSES solver
    when activated by the ACTIVE SOLVER GTSES
    command
  • ASSEMBLE FOR FATIGUE
  • SOLVE FOR FATIGUE
  • COMPUTE FATIGUE LJF
  • PERFORM FATIGUE ANALYSIS

54
Offshore (cont)
  • A new GTSELOS feature has been implemented
    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.

55
Steel Design
  • The AISC 14th Edition design code has been
    implemented as a released feature. Both LRFD
    (load and resistance factor design) and the ASD
    (allowable strength design) methods of the AISC
    Fourteenth Edition are implemented.

56
Steel Design (cont)
  • This new code, AISC14, may be used to select or
    check any of the following shapes
  • Design for bi-axial bending and axial forces
  • I shapes Channel
  • Single Angles Tees
  • Double Angles Solid Round Bars
  • Solid Rectangular and Square Bars

57
Steel Design (cont)
  • AISC14 code design for bi-axial bending, axial,
    and torsional forces
  • Round HSS (Pipes)
  • Rectangular and Square HSS (Structural Tubes)
  • The documentation for the AISC14 code may be
    found by selecting Help and then Reference
    Documentation, Reference Manuals, Steel Design,
    and AISC14 in the GTSTRUDL Output Window.

58
Steel Design (cont)
  • New and modified Parameters for the AISC14 code
  • CODE AISC14 ALL
  • If using METHOD ASD, the following parameter
  • may be used to specify an ASD reduction factor
    for the second order analysis results which
    should be analyzed for 1.6 times the ASD
    loadings
  • ASDRF 1.6 ALL

59
Steel Design (cont)
  • Other parameters that are specific to AISC14
  • CombEqs parameter to indicate which flexure and
    axial force combined equation from Section H1 or
    H2 is to be used.
  • SECNDARY parameter is applicable to the
    stiffened element of I shapes which are used as
    diagonal braces

60
Steel Design (cont)
  • The ANSI/AISC N690-12, specification for
    safety-related steel structures for nuclear
    facilities has been added. This code is based on
    the AISC steel construction manual, Fourteenth
    Edition specification with a few modifications.
    Both LRFD (load and resistance factor design) and
    the ASD (allowable strength design) methods of
    the AISC Fourteenth Edition are applicable.

61
Steel Design (cont)
  • Applicable cross-sections for N690-12 are
  • I shapes, Channel, Single Angles, Tees, Double
    Angles, Round HSS (Pipes), Rectangular and Square
    HSS (Structural Tubes), Solid Round Bars, Solid
    Rectangular and Square Bars.

62
Steel Design (cont)
  • New parameters for N690-12
  • StemTees parameter for the unstiffened element
    of the stem of tee shaped compression members.
  • ColSMF parameter to limit the width to
    thickness ratio of flanges of built-up box
    sections of columns in SMF systems.

63
Steel Design (cont)
  • The transmission tower provisions, slenderness
    ratio and computation of the number of bolts, are
    now implemented in AISC14 code. When a value of
    YES has been specified for parameter TowerCK,
    transmission tower provisions are checked in
    addition to the provisions of the AISC14 code.
    Applicable cross-sections are single and double
    angles.

64
Steel Design (cont)
  • Elastic shear resistance of the EC3-2005 has been
    modified to use the first moment of area. The
    local shear stress, tED, in the Equation 6.20 of
    the EN 1993-1-12005(E) is now computed using the
    first moment of area (e.g. S). The thickness, t,
    in the Equation 6.20 also has been modified to
    use the total thickness of the cross-section to
    resist the shear force.

65
Steel Design (cont)
  • A new steel grade, A1011G33, has been added to
    the AISI89 code for the UNISTRUT cross-sections.
    This is the ASTM steel grade A1011 with a yield
    stress of 33 ksi.

66
Steel Tables
  • New Imperial and Metric tables from the AISC 14th
    edition have been added to GTSTRUDL.
  • The tables for rectangular and circular concrete
    sections has been moved to a release status. The
    table names are CONCIR and CONRECT.

67
Base Plate Wizard
  • The Loading page has been changed, with a new
    layout and functionality. The load data display
    is no longer editable. Load data entry, editing
    and deletions is now done through dedicated
    dialogs available from buttons on the Loading
    page. A display units control has been added to
    allow you to see the loading data in units other
    than the default of inches and pounds or
    millimeters and Newtons. The modified Loading
    page is shown on the next slide.

68
Base Plate Wizard (cont)
New Edit and Delete buttons
New ability to change units
69
Base Plate Wizard (cont)
  • A Run Analysis option has been added to the
    File menu. After loadings have been added to the
    Base Plate or a .gtbp file with loadings and
    either anchors or constraints has been read, this
    menu selection will automatically create an input
    file including analysis and process the file. If
    File - Write GTSTRUDL input has been used, those
    dialog settings (file name, result types, .gts
    file) are retained and used by Run Analysis. The
    revised File menu is shown on the next slide.

70
Base Plate Wizard (cont)
71
Base Plate Wizard (cont)
  • Two new pipe and hollow shape tables have been
    added to the GTStrudl\33\BasePlate folder
    PIPES9.txt and RdHSS13.txt. These tables
    correspond to the GTSTRUDL standard tables of the
    same name. The profiles can be accessed by using
    the Options - Attachment file menu pick or by
    concatenating one or both files to your current
    default attachment file.

72
Base Plate Wizard (cont)
  • A new results type has been added Constraint
    Reactions.
  • Constraint Reactions are only applicable to
    constraints with restrained boundary conditions.
    Constraint Reactions are available through the
    Results - Constraint reactions menu pick, or as
    part of the Results Summary.

73
Base Plate Wizard (cont)
  • Constraint Reactions consist of the force
    reactions FX, FY and FZ for each joint in the
    constraint, plus the SRSS (Square Root Sum of the
    Squares) of the three shear values. You can
    request the reaction moments MX, MY and MZ if
    desired. Constraint Reactions are equivalent to
    the GTSTRUDL command
  • LIST REACTIONS JOINTS GROUP CON1' (for
    constraint 1).

74
Base Plate Wizard (cont)
  • A new results type has been added Attachment
    Displacement.
  • Attachment Displacement is the displacement of
    the control or load point of an attachment due to
    the applied loads. It is equivalent to the
    GTSTRUDL command
  • LIST DISPLACEMENTS JOINT C1
  • (for attachment 1). Attachment Displacement is
    only available through the Results Summary.

75
Base Plate Wizard (cont)
  • The Constraint Reactions results dialog has been
    added under the Results pulldown menu

76
Base Plate Wizard (cont)
  • The Constraint Reactions Results table is shown
    on the next slide. Use the Forces Moments
    button to include MX, MY and MZ in the table.
  • The Select loads button allows you to select
    which loads are included in the table. By
    default, all loads are included.

77
(No Transcript)
78
Base Plate Wizard (cont)
  • The Results Summary dialog and output have been
    changed. Changes include
  • Individual load maximums for bearing surface
    pressure, plate displacement and plate stress.
  • Selectable plate stress types.
  • Attachment centroid displacements and rotations.
  • Constraint reactions.
  • The revised dialog is shown on the next slide.

79
(No Transcript)
80
QA
  • Since the last Users Group meeting, we have been
    audited a record number of times
  • The following audits were conducted
  • NIAC (Nuclear Industry Assessment Committee)
    (Burns and McDonnell lead)
  • Nuclear Systems Audits (Internal)
  • Bechtel National
  • Shaw Nuclear
  • Sargent and Lundy

81
QA (cont)
  • Simpson, Gumpertz and Heger
  • IHI Corporation (Japan)
  • NUPIC (Nuclear Procurement Issues Committee)
  • ENERCON
  • Automated Engineering Services

82
Future Enhancements
83
Base Plate
  • X or Y rotation of attachments to model
    attachments which are 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.

84
Base Plate (cont)
  • Batch processing of .gtbp files. 
  • Optional output of load names causing the largest
    interaction value for anchors in Results
    Summary. 
  • Have options to exclude stress concentrations at
    end points of attachments and constraints in
    stress output report. Preliminary dialogs are
    shown on the next slides.

85
Base Plate (cont)
  • To exclude joints at the end points of the lines
    that are used to model within the BPW from
    Stress listings and summary, use the Advanced
    Plate Stresses menu

86
Base Plate (cont)
  • First, select one or more modeling entities to
    exclude joints from. Note that Distance is a
    radius from line endpoints. The result is shown
    on the next slide.

87
(No Transcript)
88
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.

89
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.

90
Dynamic Analysis (cont)
  • Improve the efficiency of the GT64MLANCZOS
    eigenvalue solver for very large jobs that
    require very high numbers of modes (e.g. 300,000
    DOFs and 10,000 modes).

91
Dynamic Analysis (cont)
  • The LIST DYNAMIC PARTICIPATION FACTORS command
    will be enhanced to also list the frequencies of
    each mode.

92
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 and the SBMITC element. This is
    particularly convenient and useful for structures
    formed by surfaces of revolution.

93
Finite Elements (cont)
  • Implement new 3 node plane stress, plate bending
    and plate triangular elements. The plane stress
    element will have 3 DOF (two translational DOF
    and a drilling DOF). The plate bending element
    will model moderately thick plates. These two
    new elements will be combined to form a new plate
    element.

94
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.

95
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.

96
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.

97
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.

98
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 determining configuration problem.
  • Add IGNORE NONORTHOGONAL MEMBERS option.
  • Ignore members not within specified angle of
    global axis so bracing doesnt need to be
    inactivated.

99
General (cont)
  • Develop 64 bit version of GTSTRUDL.

100
GTMenu
  • Add Undo to remove duplicate joints dialog to
    avoid corrupting model due to using a tolerance
    which was too large.
  • Graphically specify Area Loads in GTMenu.

101
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

102
GTMenu (cont)
  • 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 commands that will do this.

103
GTMenu (cont)
  • Develop Joint, Member and Element Datasheets for
    Inquire and Editing
  • Preliminary development is shown on the next few
    slides.

104
GTMenu (cont)
  • You will be able to optionally use the datasheets
    for a right click Inquire function. The option
    will be set using the pulldown below

105
GTMenu (cont)
  • Sample datasheet using right click Inquire on
    joints

106
GTMenu (cont)
  • Revised Edit Joint Data dialog showing Datasheet
    Options. Similar dialogs will be available for
    the Edit Member Data and Edit Element Data
    dialogs.

107
GTMenu (cont)
  • Sample Portion of Member Datasheet

108
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.

109
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.

110
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 and IPSLIM elements.

111
Nonlinear Analysis (cont)
  • Extend geometric nonlinear analysis to include
    the new SBMITC element and the new triangular
    plate element.

112
Offshore
  • Implement procedures that enable GTSTRUDL to
    perform the required dynamic analyses of GTSELOS
    wave load data and to use the dynamic wave force
    results in fatigue analyses.

113
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.

114
Offshore (cont)
  • An Influence Matrix approach to perform hotspot
    fatigue analysis of connection details other than
    simple tubular joints is planned.
  • Increase precision of wave load computations in
    GTSELOS.

115
Reinforced Concrete
  • The ACI 318-11 code will be implemented for beam
    and column design.
  • The DESIGN SLAB command will be brought to
    release status.

116
Steel Design (cont)
  • Move offshore code, 19902-07, to release status.
    19902-07 code is based on the International
    Standard ISO 199022007(E), First Edition,
    Petroleum and natural gas industries.

117
Steel Design (cont)
  • 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.

118
Steel Design (cont)
  • 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.

119
Steel Design (cont)
  • Steel design based on the Seismic provisions of
    the AISC 14th Edition.
  • Add a new option to the SELECT command to design
    the FAILED members.
  • SELECT ALL FAILED MEMBERS
  • Also add a new option to the CHECK command to
    design the FAILED members.

120
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.

121
Steel Design (cont)
  • Add a FOR MAXIMUM DIAGRAM VALUES option to the
    SELECT and CHECK command. This option creates a
    single maximum force value for each individual
    load case. When this option is used, each
    artificial load case will have force and moment
    values which are the maximum values of individual
    forces and moments no matter where the maximum is
    located along the members length.

122
Interfaces to Other Programs
  • ATLAS by 3DR Engineering Ltd. in Europe
  • AutoCAD interface via DXF converter
  • Intergraphs Frameworks
  • Intergraphs SmartPlant 3D CIS/2
  • Structural Desktop by Structural Desktop, Inc
  • Tekla Structures
  • Other CAD programs which support DXF or CIS/2

123
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 new commands,
    model wizard additions, design codes (which codes
    and which cross sections) or datasheet requests.
  • Sample commands, sketches of wizards, output, and
    graphical displays help us tremendously.
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