FE structural analysis and design optimization of high pressure vessel case body and multiplier parts. General view of high-pressure vessel. Vertical cross section

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FE structural analysis and design optimization
of high pressure vessel
case body and multiplier parts.
General view of high-pressure vessel.
Vertical cross section
Upper half-body Lock Multiplier Lower half-body
By-pass conduit
Inlet conduit
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FE model of case body parts
Contact interaction zones
Solid FE type SOLID92
Contact FE type CONTA174 TARGE170
Number of solid elements NE 42859
Number of contact elements NCE 1343
Number of nodes NN 42740
Number of equations NEQ 120820
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Case body. Equivalent stress for analysis of 3D
contact interaction of case body parts under
internal pressure
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Structural analysis for technological conduit
zones. Submodeling method
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3D linear static analysis. Equivalent stress
Inlet conduit
By-pass conduit
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Lower part of the half-body. Submodeling method
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Lower part of the half-body. 3D FE model
Solid FE type SOLID92
Number of FE NE 107641
Number of nodes NN 154076
Number of equations NEQ 450820
Solution method Solution time RAM requested
PCG 4 min 20 sec 489 Mb
JCG 13 min 10 sec 244 Mb
ICCG 35 min 20 sec 489 Mb
Sparse 120 hours 454 Mb
Frontal 120 hours 385 Mb
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3D linear static analysis.
Equivalent stress
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Design optimization of case body parts
Design variables Six geometric variables of the
case body parts
Constrains ?max lt ?0.2/ksafety
Objective function Metal-intensity
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Initial and final designs. Equivalent stress
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Basic results of design optimization
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Experimental research of strain fields. 12
strain gauges on the inner surface of the lock
Gage number Value measured
1,3,6,7,9,11 ??
2,4,5,8,10,12,14 ?z
13 ?r
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Gages measuring ??
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3D solid model of multiplier
Membrane Punch hard-alloy insert Capsule
Graphite
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Multiplier elements
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Membrane
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FE model of multiplier
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Equivalent stress for analysis of 3D contact
interaction of punch and hard-alloy insert under
external pressure
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New design of hard-alloy insert.
Analysis of
utilization possibility
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Equivalent stress for analysis of 3D contact
interaction of punch and hard-alloy insert under
external pressure. New design of
hard-alloy insert
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Membrane. Equivalent stress