Abaqus to OptiStruct Conversion Mapping
The Abaqus to OptiStruct conversion uses an open conversion scheme; you can specify different mappings in the configuration file.
Care has to be taken so that the element and property mappings are consistent. A valid mapping scheme is provided in the ConfigurationFile.txt file. This document explains the scope and limitations of the mapping scheme.
Contact and Pretension Groups
- Contacts
- NLPARM card is automatically created and assigned to a nonlinear quasi-static subcase for models containing contacts.
- *SURFACE INTERACTION property with clearance/pressure vs conductivity is mapped to PCONTHT with TABLED1 cards.
- *MODELCHANGE conversion is supported for both element set and contact group.
- *CONTACT PAIR will be mapped to FINITE when SMALL SLIDING is not defined.
- *CONTACT PAIR will be mapped to its default (SLIDE) when SMALL SLIDING is defined.
- *CONTACT CONTROLS are converted to CNTSTB and is mapped to loadstep.
- Bolt Pretension
- *PRETENSION SECTION group maps to a PRETENS entity set with reference to a 1D pretension element or a 3D pretension surface (SURF).
- *CLOAD applied to a pretension node converts to PTFORCE.
- *BOUNDARY applied to a pretension node converts to PTADJST.
- *BOUNDARY, FIXED option in step converts to STATSUB(PRETENS) on a preceding pretension subcase.
Abaqus type | HM config, OptiStruct type |
---|---|
*SURFACE (node based) | set, SET |
*SURFACE (element based) | contact surface, SURF |
*CONTACT PAIR | group, CONTACT |
*TIE | group, TIE |
*TIE (1D) | group, TIE(N2N) |
*PRETENSION SECTION | set, PRETENS contact surface, SURF |
*SURFACE INTERACTION, Separation, No/Yes | Property ,PCONT, Separation, No/Yes |
*CONTACT CONTROLS | Load collector, CNTSTB |
*MODEL CHANGE | MODCHG |
* RIGID BODY | rbody, RBODY |
*SHELL TO SOLID COUPLING | Group, TIE |
NONSTRUCTURAL MASS | Group,NSML1 |
Elements
HyperWorks elements have two basic attributes – configuration (or config) and type. The "config" defines the basic geometrical shape of an element. For example, tria3 configuration is a 3 node triangular element and hexa8 is an 8-node hexahedral element. The "type" defines the solver specific element type of a particular configuration. For example, the 4-node quadrilateral (quad4) element in Abaqus can be any of the following types: S4, S4R, M3D4, R3D4, and so on. The Element Types panel shows all supported element configurations and their types for a user profile.
HM configuration | Abaqus | OptiStruct type |
---|---|---|
Mass | MASS | CONM2 |
ROTARYI | CONM2 | |
SPRING1 | CELAS1, CELAS2, CBUSH | |
DASHPOT1 | CDAMP1 | |
CONN3D2 | CBUSH | |
CONN2D2 | CBUSH | |
rigid | BEAM | RBE2 |
LINK | RBE2 | |
PIN | RBE2 | |
TIE | RBE2 | |
KINCOUP | RBE2 | |
COUP_KIN | RBE2 | |
COUP_DIS | RBE2 | |
RB3D2 | RBE2 | |
R2D2 | RBE2 | |
RAX2 | RBE2 | |
RB2D2 | RBE2 | |
rbe3 | DCOUP3D | RBE3 |
COUP_DIS | RBE3 | |
DCOUP2D | RBE3 | |
rigidlink | KINCOUP | RBE2 |
RB3D2 | RBE2 | |
BEAM | RBE2 | |
LINK | RBE2 | |
PIN | RBE2 | |
TIE | RBE2 | |
COUP_KIN | RBE2 | |
COUP_DIS | RBE3 | |
R2D2 | RBE2 | |
RAX2 | RBE2 | |
RB2D2 | RBE2 | |
spring | SPRING2 | CELAS1, CBUSH |
SPRINGA | CBUSH | |
DASHPOT2 | CDAMP1, CBUSH | |
DASHPOTA | CBUSH | |
JOINTC | CBUSH | |
bar2 | B31 | CBAR,CBEAM |
B31H | CBAR,CBEAM | |
B33 | CBAR,CBEAM | |
B33H | CBAR,CBEAM | |
B31OS | CBAR,CBEAM | |
B31OSH | CBAR,CBEAM | |
PIPE31 | CBAR,CBEAM | |
PIPE31H | CBAR,CBEAM | |
ELBOW31 | CBAR,CBEAM | |
ELBOW31B | CBAR,CBEAM | |
ELBOW31C | CBAR,CBEAM | |
AC1D2 | CBAR,CBEAM | |
GK3D2 | CBAR,CBEAM | |
GK3D2N | CBAR,CBEAM | |
SAX1 | CBAR,CBEAM | |
B21 | CBAR,CBEAM | |
B21H | CBAR,CBEAM | |
B23 | CBAR,CBEAM | |
B23H | CBAR,CBEAM | |
PIPE21 | CBAR,CBEAM | |
PIPE21H | CBAR,CBEAM | |
F2D2 | CBAR,CBEAM | |
FAX2 | CBAR,CBEAM | |
bar3 | B32 | CBAR,CBEAM |
B32H | CBAR,CBEAM | |
B32OS | CBAR,CBEAM | |
B32OSH | CBAR,CBEAM | |
PIPE32 | CBAR,CBEAM | |
PIPE32H | CBAR,CBEAM | |
ELBOW32 | CBAR,CBEAM | |
AC1D3 | CBAR,CBEAM | |
MGAX2 | CBAR,CBEAM | |
SFMAX2 | CBAR,CBEAM | |
SFMGAX2 | CBAR,CBEAM | |
SAX2 | CBAR,CBEAM | |
B22 | CBAR,CBEAM | |
B22H | CBAR,CBEAM | |
PIPE22 | CBAR,CBEAM | |
PIPE22H | CBAR,CBEAM | |
rod | T3D2 | CROD |
T3D2H | CROD | |
T3D2T | CROD | |
T3D2E | CROD | |
MGAX1 | CROD | |
SFMAX1 | CROD | |
SFMGAX1 | CROD | |
CONN3D2 | CBUSH | |
T2D2 | CROD | |
T2D2H | CROD | |
T2D2T | CROD | |
T2D2E | CROD | |
GK2D2 | CROD | |
GK2D2N | CROD | |
CONN2D2 | spring CELAS1,CELAS2,CBUSH | |
gap | GAPUNI | CGAP |
GAPCYL | CGAP | |
GAPSPHER | CGAP | |
tria3 | S3 | CTRIA3,CTRIAR |
S3R | CTRIA3,CTRIAR | |
STRI3 | CTRIA3,CTRIAR | |
M3D3 | CTRIA3,CTRIAR | |
SFM3D3 | CTRIA3,CTRIAR | |
R3D3 | CTRIA3,CTRIAR | |
DS3 | CTRIA3,CTRIAR | |
CPE3 | CTRIA3,CTRIAR | |
CPE3H | CTRIA3,CTRIAR | |
CPE3E | CTRIA3,CTRIAR | |
CPS3 | CTRIA3,CTRIAR | |
CPS3E | CTRIA3,CTRIAR | |
CAX3 | CTRIA3,CTRIAR | |
CAX3H | CTRIA3,CTRIAR | |
CAX3E | CTRIA3,CTRIAR | |
CGAX3 | CTRIA3,CTRIAR | |
CGAX3H | CTRIA3,CTRIAR | |
AC2D3 | CTRIA3,CTRIAR | |
ACAX3 | CTRIA3,CTRIAR | |
DCAX3 | CTRIA3,CTRIAR | |
DCAX3E | CTRIA3,CTRIAR | |
DC2D3 | CTRIA3,CTRIAR | |
DC2D3E | CTRIA3,CTRIAR | |
quad4 | S4 | CQUAD4,CQUADR |
S4R | CQUAD4,CQUADR | |
S4R5 | CQUAD4,CQUADR | |
M3D4 | CQUAD4,CQUADR | |
M3D4R | CQUAD4,CQUADR | |
SFM3D4 | CQUAD4,CQUADR | |
SFM3D4R | CQUAD4,CQUADR | |
R3D4 | CQUAD4,CQUADR | |
DS4 | CQUAD4,CQUADR | |
GK3D4L | CQUAD4,CQUADR | |
GK3D4LN | CQUAD4,CQUADR | |
F3D4 | CQUAD4,CQUADR | |
CPE4I | CQUAD4,CQUADR | |
CPE4 | CQUAD4,CQUADR | |
CPE4H | CQUAD4,CQUADR | |
CPE4IH | CQUAD4,CQUADR | |
CPE4R | CQUAD4,CQUADR | |
CPE4RH | CQUAD4,CQUADR | |
CPE4T | CQUAD4,CQUADR | |
CPE4HT | CQUAD4,CQUADR | |
CPE4E | CQUAD4,CQUADR | |
CPS4 | CQUAD4,CQUADR | |
CPS4I | CQUAD4,CQUADR | |
CPS4R | CQUAD4,CQUADR | |
CPS4T | CQUAD4,CQUADR | |
CPS4E | CQUAD4,CQUADR | |
CAX4 | CQUAD4,CQUADR | |
CAX4H | CQUAD4,CQUADR | |
CAX4I | CQUAD4,CQUADR | |
CAX4IH | CQUAD4,CQUADR | |
CAX4R | CQUAD4,CQUADR | |
CAX4RH | CQUAD4,CQUADR | |
CAX4T | CQUAD4,CQUADR | |
CAX4HT | CQUAD4,CQUADR | |
CAX4E | CQUAD4,CQUADR | |
CAXA4N | CQUAD4,CQUADR | |
CAXA4HN | CQUAD4,CQUADR | |
CAXA4RN | CQUAD4,CQUADR | |
CAXA4RHN | CQUAD4,CQUADR | |
CGAX4 | CQUAD4,CQUADR | |
CGAX4H | CQUAD4,CQUADR | |
CGAX4R | CQUAD4,CQUADR | |
CGAX4RH | CQUAD4,CQUADR | |
AC2D4 | CQUAD4,CQUADR | |
ACAX4 | CQUAD4,CQUADR | |
DC2D4 | CQUAD4,CQUADR | |
DC2D4E | CQUAD4,CQUADR | |
DCAX4 | CQUAD4,CQUADR | |
DCAX4E | CQUAD4,CQUADR | |
DCCAX4 | CQUAD4,CQUADR | |
DCCAX4D | CQUAD4,CQUADR | |
GKPS4 | CQUAD4,CQUADR | |
GKPE4 | CQUAD4,CQUADR | |
GKPS4N | CQUAD4,CQUADR | |
tria6 | STRI65 | CTRIA6 |
M3D6 | CTRIA6 | |
SFM3D6 | CTRIA6 | |
DS6 | CTRIA6 | |
CPE6 | CTRIA6 | |
CPE6H | CTRIA6 | |
CPE6M | CTRIA6 | |
CPE6MH | CTRIA6 | |
CPS6 | CTRIA6 | |
CPS6M | CTRIA6 | |
AC2D6 | CTRIA6 | |
ACAX6 | CTRIA6 | |
DCAX6 | CTRIA6 | |
DC2D6 | CTRIA6 | |
DCAX6E | CTRIA6 | |
DC2D6E | CTRIA6 | |
CAX6 | CTRIA6 | |
CAX6H | CTRIA6 | |
CAX6M | CTRIA6 | |
CAX6MH | CTRIA6 | |
CGAX6 | CTRIA6 | |
CGAX6H | CTRIA6 | |
quad8 | S8R | CQUAD8 |
S8R5 | CQUAD8 | |
S8RT | CQUAD8 | |
M3D8 | CQUAD8 | |
M3D8R | CQUAD8 | |
SFM3D8 | CQUAD8 | |
SFM3D8R | CQUAD8 | |
DS8 | CQUAD8 | |
CPE8 | CQUAD8 | |
CPE8H | CQUAD8 | |
CPE8R | CQUAD8 | |
CPE8RH | CQUAD8 | |
CPS8 | CQUAD8 | |
CPS8R | CQUAD8 | |
AC2D8 | CQUAD8 | |
ACAX8 | CQUAD8 | |
DC2D8 | CQUAD8 | |
DCAX8 | CQUAD8 | |
DCAX8E | CQUAD8 | |
DC2D8E | CQUAD8 | |
CAX8 | CQUAD8 | |
CAX8H | CQUAD8 | |
CAX8HT | CQUAD8 | |
CAX8R | CQUAD8 | |
CAX8RH | CQUAD8 | |
CAX8RHT | CQUAD8 | |
CAX8RT | CQUAD8 | |
CGAX8 | CQUAD8 | |
CGAX8H | CQUAD8 | |
CGAX8R | CQUAD8 | |
CGAX8RH | CQUAD8 | |
CAXA8N | CQUAD8 | |
CAXA8HN | CQUAD8 | |
CAXA8PN | CQUAD8 | |
CAXA8RN | CQUAD8 | |
CAXA8RHN | CQUAD8 | |
CAXA8RPN | CQUAD8 | |
tetra4 | C3D4 | CTETRA |
C3D4H | CTETRA | |
C3D4E | CTETRA | |
AC3D4 | CTETRA | |
DC3D4 | CTETRA | |
DC3D4E | CTETRA | |
C3D4T | CTETRA | |
penta6 | AC3D6 | CPENTA |
C3D6 | CPENTA | |
C3D6H | CPENTA | |
DC3D6 | CGASK6 | |
DC3D6E | CGASK6 | |
GK3D6 | CPENTA | |
GK3D6N | CPENTA | |
SC6R | CPENTA | |
COH3D6 | CPENTA | |
hex8 | C3D8I | CHEXA |
C3D8 | CHEXA | |
C3D8T | CHEXA | |
C3D8H | CHEXA | |
C3D8HT | CHEXA | |
C3D8IH | CHEXA | |
C3D8R | CHEXA | |
C3D8RH | CHEXA | |
C3D8E | CHEXA | |
AC3D8 | CHEXA | |
DC3D8 | CHEXA | |
DC3D8E | CHEXA | |
DCC3D8 | CHEXA | |
DCC3D8D | CHEXA | |
GK3D8 | CGASK8 | |
GK3D8N | CGASK8 | |
SC8R | CHEXA | |
COH3D8 | CHEXA | |
tetra10 | C3D10 | DC3D10 |
C3D10H | DC3D11 | |
C3D10M | DC3D12 | |
C3D10MH | DC3D13 | |
C3D10E | DC3D14 | |
DC3D10E | DC3D15 | |
AC3D10 | DC3D16 | |
DC3D10 | DC3D17 | |
penta15 | C3D15H | CPENTA |
C3D15E | CPENTA | |
AC3D15 | CPENTA | |
DC3D15 | CPENTA | |
DC3D15E | CPENTA | |
hex20 | C3D20 | CHEXA |
C3D20H | CHEXA | |
C3D20R | CHEXA | |
C3D20RH | CHEXA | |
C3D20E | CHEXA | |
C3D20RE | CHEXA | |
C3D20T | CHEXA | |
C3D20HT | CHEXA | |
C3D20RT | CHEXA | |
C3D20RHT | CHEXA5 | |
DC3D20 | CHEXA | |
AC3D20 | CHEXA | |
DC3D20E | CHEXA | |
Pyramid | C3D8I | CPYRA |
- Connector1 types converted:
- AXIAL: Active = [1], Rigid = [-]
- CARTESIAN, PROJECTION CARTESIAN: Active = [123], Rigid = [-]
- JOIN: Active = [-], Rigid = [123]
- RADIAL-THRUST: Active = [13]*, Rigid = [-]Note: Requires cylindrical system
- SLIDE-PLANE: Active = [23], Rigid = [1]
- SLOT: Active = [1], Rigid = [23]
- Connector2 types converted:
- ALIGN: Active = [-], Rigid = [456]
- CARDAN, EULER, ROTATION, FLEXION-TORSION, PROJECTION FLEXION-TORSION: Active = [456], Rigid = [-]
- REVOLUTE: Active = [4], Rigid = [56]
- Special assembled Connector1 types:
- BEAM, WELD = (JOIN + ALIGN): Active = [-], Rigid = [123456]
- CYLINDRICAL = (SLOT + REVOLUTE): Active = [14], Rigid = [2356]
- HINGE = (JOIN + REVOLUTE): Active = [4], Rigid = [12356]
- PLANAR = (SLIDE-PLANE + REVOLUTE): Active = [234], Rigid = [156]
- TRANSLATOR = (SLOT + ALIGN): Active = [1], Rigid = [23456]
- BUSHING = (PROJECTION CARTESIAN + PROJECTION FLEXION-TORSION): Active = [123456], Rigid = [-]
- PBUSH stiffness and damping values (Ki, Bi) for active DOFs are mapped from *CONNECTOR BEHAVIOR material data. Rigid DOFs map to RIGID option inside PBUSH.
- CBUSH orientation is mapped from *CONNECTOR SECTION Orientation system.
- Only 1 Orientation system can be mapped to CBUSH CID.
- If 2 Orientation systems are present in the Abaqus card, HyperWorks only maps the first one.
It is possible to use a simplified conversion of Abaqus connectors (CONN3D2) to rbe2 elements when modifying ConfigurationFile.txt in the following way (change the entry for rod element type configuration: rod,CONN3D2 rigid,rbe2
CONN3D2 elements will now be converted to RBE2 elements. Depending on the connection type set in the CONNECTOR SECTION (such as AXIAL or HINGE), degrees of freedom will be set for the RBE2 element. If systems are associated to the connector elemental nodes they will be assigned to the nodes of the RBE2 as well. Not all connection types are supported. If a system is ignored by a particular CONNECTOR SECTION, it will not be assigned to the nodes of the RBE2 either.
These connector types are currently considered in conversion: AXIAL, JOIN, LINK, SLIDE-PLANE, SLOT, ALIGN, REVOLUTE, BEAM, CYLINDRICAL, HINGE, PLANAR, TRANSLATOR, WELD.
*KINEMATIC COUPLING constraints with element based surfaces (currently mapped to groups in HyperWorks) are converted into RBE2 rigid elements. *DISTRIBUTING COUPLING constraints are converted to RBE3 elements.
- SPRING1/2 without ORIENTATION converts to CELAS1
- SPRINGA or SPRING1/2 with ORIENTATION converts to CBUSH/PBUSH/PBUSHT with K/KN lines. For SPRING1/2, ORIENTATION maps to CBUSH, CID.
- DASHPOT1/2 without ORIENTATION converts to CDAMP1
- DASHPOTA or DASHPOT1/2 with ORIENTATION converts to CBUSH/PBUSH/PBUSHT with B line. For DASHPOT1/2, ORIENTATION maps to CBUSH, CID.
- Convertor has an additional option: Convert *SPRING defined with Orientation to CBUSH. If this option is enabled, *SPRING is converted to CBUSH if not enabled to CELAS.
Connector Section | Values |
---|---|
AXIAL | AXIAL |
AXIAL ALIGN | AXIAORIE |
AXIAL, ALIGN | AXIAL, ORIENT |
BEAM (JOIN + ALIGN) | BALL + ORIENT OR CBUSH, Pbush (RIGID all) |
LINK | RROD |
LINK ALIGN | RLINORIE |
LINK, ALIGN | RROD, ORIENT |
JOIN | BALL |
JOIN, ROTATION | BALL, CARDAN |
HINGE (JOIN + REVOLUTE) | REVOLUTE, BALL |
SLOT | INLINE |
SLOT CARDEN | INLICARD |
CYLINDRICAL (SLOT + REVOLUTE) | INLINE + REVOLUTE |
TRANSLATOR (SLOT + ALGIN) | INLINE, ORIENT |
CARTESIAN | CARTESIAN |
SLIDE-PLANE | INLINE |
UJOINT (JOIN + UNIVERSAL) | BALL, UNIVERSAL |
HINGE | RBAR + REVOLUTE |
Nodal thickness is mapped to respective grid post conversions.
HTML report supported for Joints.
Configuration file paths are selected in batch mode conversion. Conversion options can be used in batch mode conversion by editing the configuration file.
Sectional Properties
Some of the properties in one solver can be converted to two different sections in the other solver. For an Abaqus to OptiStruct conversion, for example, *DASHPOT can be converted to *PELAS or PDAMP. The property mapping scheme can be edited under the *PropertyConversion block in the ConfigurationFile.txt file.
The property conversion scheme and corresponding element conversion scheme must be consistent. For example, if you define *CONNECTOR SECTION to PBUSH at the property mapping scheme, the corresponding element CONN3D2 must map to CBUSH in the element mapping scheme.
For SOLID SECTION the converter will always convert to PSOLID unless the property has a data line indicating a cross-sectional area for a truss element. In this case conversion results in a PROD property.
For BEAM (GENERAL) SECTION the algorithm automatically decides which property to convert to depending on the element type chosen in the ElementTypeConversion section of the ConfigurationFile.txt. For example, if you want to convert B31 elements to CBAR, the beam property will get converted to a PBAR or PBARL property. If you choose to convert B31 elements to CBEAM, then the converter creates PBEAM or PBEAML properties accordingly. The same logic applies to B32 elements; the difference is that they are changed to first order beam elements first on conversion.
Abaqus type | OptiStruct type |
---|---|
*SURFACE INTERACTION | PCONT |
*SURFACE BEHAVIOR, PRESSURE -OVERCLOSURE = EXPONENTIAL | PCONT SOFT YES + STFEXP |
*FRICTION | PCONT |
*GASKET SECTION | PGASK |
*BEAM GENERAL SECTION | PBAR(L), PBEAM(L) |
*BEAM SECTION | PBAR(L), PBEAM(L) |
*CONNECTOR SECTION | JOINTG |
*CONNECTOR SECTION-JOIN | JOINTG-BALL |
*CONNECTOR SECTION-REVOLUTE | JOINTG-REVOLUTE |
*CONNECTOR SECTION-UNIVERSAL | JOINTG-UNIVERSAL |
*DASHPOT | PELAS,PDAMP |
*GAP | PGAP |
*MASS | CONM2 |
*MEMBRANE SECTION | PSHELL |
*ROTARY INERTIA | CONM2 |
*SHELL GENERAL SECTION | PSHELL |
*SHELL GENERAL SECTION | PSHELL |
*SHELL SECTION | PSHELL |
*SOLID SECTION | PSOLID |
*SPRING | PELAS, PBUSH, PBUSHT |
*SOLID SECTION (Homogeneous) | PROD |
*SHELL GENERAL SECTION (Homogeneous) | PSHELL |
*SHELL GENERAL SECTION (User) | PSHELL |
*SHELL SECTION (Composite) | PCOMP, PCOMPG |
*SHELL SECTION COMPOSITE | Property, PCOMPLS |
*SHELL GENERAL SECTION (Composite) | PCOMP, PCOMPG |
Materials
Abaqus type | OptiStruct type | |
---|---|---|
*MATERIAL | *ELASTIC, ISOTROPIC | MAT1 |
*ELASTIC, ISOTROPIC E, poisson's ratio, T |
MATT1 with TABLEM1 for E and poisson's ratio | |
*ELASTIC, LAMINA | MAT8 | |
*PLASTIC stress (x), plastic strain (y) |
MATS1 with TYPSTRN=1 for plastic strain. TABLES1 with stress (y) vs plastic strain (x) |
|
*PLASTIC stress (x), plastic strain (y), Temp |
For each T, need a separate TABLES1. TABLEST to define T and corresponding TABLES1. |
|
*SPECIFIC HEAT | MAT4, CP | |
*CONDUCTIVITY | MAT4, K | |
*EXPANSION expansion coeff, T |
MATT1 with TABLEM1 for expansion coeff (A) | |
*ELASTIC TYPE=ENGINEERING CONSTANTS | MAT8 | |
*GASKET BEHAVIOR | *GASKET ELASTICITY, COMPONENT = MEMBRANE | MGASK + MAT1 |
*GASKET ELASTICITY, COMPONENT = TRANSVERSE SHEAR |
MGASK + MAT1 GPL field of MGASK card |
|
*GASKET THICKNESS BEHAVIOR, DIRECTION = LOADING pressure (x), closure (y) |
TABLES1 curve with pressure (y) vs closure (x) definition TABLES1 referred in TABLED field of MGASK |
|
*GASKET THICKNESS BEHAVIOR, DIRECTION = LOADING for TYPE = ELASTO-PLASTIC | BEHAV = 0 in MGASK | |
*GASKET THICKNESS BEHAVIOR, DIRECTION = LOADING for TYPE = DAMAGE | BEHAV = 1 in MGASK | |
*GASKET THICKNESS BEHAVIOR, DIRECTION=LOADING for TYPE = DAMAGE or ELASTO-PLASTIC with TENSILE STIFFNESS FACTOR | EPL in MGASK | |
*GASKET THICKNESS BEHAVIOR, DIRECTION = UNLOADING pressure, closure, Max closure |
For "n" max/plastic closure values, creates "n" TABLES1 for individual
unloading pressure vs closure curves. TABLES1 referred in TABLU1 TABLUn fields in MGASK. |
|
*EXPANSION expansion coeff, T |
||
*MATERIAL | *CONDUCTIVITY | MATT4,TABLEM1 |
*MATERIAL | *HYPERELASTIC, MOONEY, RIVLIN, REDUCED, POLYNOMIAL, ARRUDA, BOYCE, YEOH, NEO HOOKE | MATHE, MOONEY, RIVLIN, REDUCED, POLYNOMIAL, ARRUDA, BOYCE, YEOH, NEO HOOKE |
*MATERIAL | MATERIAL | |
*CREEP | MATVP | |
*VISCOELASTIC | MATVE | |
*ELASTIC, TYPE = ENGINEERING CONSTANTS | MAT9ORT | |
*CONNECTOR BEHAVIOR | PBUSH, PELAS |
Connector Section | Values |
---|---|
ROTATION | ROTATION |
CARTESIAN,ROTATION | CARTROTA |
Loads
HM loads have two basic attributes – configuration (or config) and type. The supported load "configs" are: force, moment, constraint, pressure, temperature, flux, velocity, acceleration and equation. The load "type" defines the solver specific type of a particular configuration. For example, pressure load can be any of the following OptiStruct types: PLOAD, PLOAD2, or PLOAD4. The Load Types panel shows all supported load configurations and their types for a user profile.
The converter also converts distributed surfaces loads (*DLSOAD) applied on faces of shell or solid elements into pressure loads (PLOAD4).
Temperature with *INTIAL condition is converted to TEMP(INTIAL) and mapped to Global Case Control.
FILM loads are converted to CHBDYE elements, sink temperatures are converted to SPC and heat transfer coefficient(H) with PCONV.
SFILM loads are converted to CHBDYE elements, sink temperatures are converted to SPC and heat transfer coefficient(H) with PCONV.
Distributed surfaces loads (*DLSOAD) applied on faces of shell or solid elements into pressure loads (PLOAD4).
For a specific configuration, you can map any supported Abaqus load type to any supported OptiStruct load type. The conversion tool does not support conversion across load configurations. The load mapping scheme can be edited under the *BCsTypeConversion block in the ConfigurationFile.txt file. You need to provide both configuration and type information to specify the mapping scheme.
Abaqus *connector behavior STOP/LOCK with Elastic/Non-linear/RIGID convert to PJOINTG with STOP/LOCK with ELAS/NLELAS/RIGID.
HM configuration | Abaqus type | OptiStruct type |
---|---|---|
temperature | TEMPERATURE | TEMP |
pressure | DLOAD | PLOAD,PLOAD2,PLOAD4 |
pressure | DLOAD, ROTA | RACC |
pressure | CENTRIFUGAL | RFORCE |
pressure | FILM | SPC |
SFILM | SPC | |
DFLUX | QBDY1 | |
Constraint | ACCELERATION | SPCD |
VELOCITY | SPCD | |
BOUNDARY | SPC,SUPORT | |
BOUNDARY on pretension node | PTADJST | |
moment | CLOAD | MOMENT |
force | CLOAD | FORCE |
CLOAD on pretension node | PTFORCE | |
equation | EQUATION | MPC |
temperature | BOUNDARY | SPC |
Connector Load | CONNECTOR LOAD | LOADJG |
Connector Motion | CONNECTOR MOTION | MOTIONJG |
Sets
Abaqus type | OptiStruct type |
---|---|
*NSET | SET |
*ELSET | SET |
Control Cards
- Node set and element set from output block for displacement and stress are mapped.
- PARAM, INREL, -2 is created if there is *INERTIA RELIEF in the OptiStruct deck.
- PARAM, RBE3COL is created if there are rbe3 elements in the OptiStruct deck.
Systems
Abaqus type | OptiStruct type |
---|---|
*ORIENTATION | CORD2C,CORD2R,CORD2S |
*SYSTEM | CORD2C,CORD2R,CORD2S |
*TRANSFORM | CORD2C,CORD2R,CORD2S |
*TRANSFORM- USER DEFINED NSET | CORD2C,CORD2R,CORD2S |
Control Cards
Displacement, Stress and Contact pressure output card is created on conversion and is mapped to respective loadstep.
Node set and element set from output block for displacement and stress are mapped if mapped to step.
PARAM,INREL,-2 is created if there is *INERTIA RELIEF in the Abaqus deck.
PARAM,RBE3COL is created if there are rbe3 elements in the Abaqus deck.
*PREPRINT,CONTACT=YES to OptiStruct CONTPRM,PREPRT,YES.
If OUTPUTBLOCK is not mapped to any loadstep these are updated in GLOBAL CASE CONTROL.
*RESTART,WRITE,OVRELAY is converted to OS RESTARTW= 1 ,COVER
Load Steps and Analysis Type
The conversion tool maps between Abaqus steps and OptiStruct subcases. It does not convert Abaqus analysis types to the solution type. You must define it manually using the Loadsteps Browser.
The converter converts *STEP into respective supported SUBCASE. Load collector references are maintained upon conversion. If multiple load collectors of a particular step have constraints, an SPCADD card is created automatically. Similarly, a LOAD card is created for homogeneous loads and mapped to step.
For models containing contacts, NLPARM card is automatically created and assigned to a nonlinear quasi-static subcase.
Abaqus models that contain both conductivity and temperature defined under *CONDUCTIVITY in *MATERIAL is converted to a non-linear Heat transfer (NLHEAT) analysis type in OptiStruct.
NLGEOM is set to YES in a loadstep with id 'i', CNTNLSUB will be set checked on, OPTION set to YES and SCID points to the previous loadstep in loadstep with id 'i+1'. The chain continues for the loadsteps.
*PERTURBUTION steps are converted to linear static.
*FREQUENCY RESIDUAL=YES is converted to RESVEC=YES on conversion.
*FREQUENCY (analysis type) is converted to normal modes with the EIGRL card (load collector) mapped in the loadstep on conversion.
*SELECTEIGENMODES converted OptiStruct MODESELECT.
SUBCASE (MONITOR) converted to MONITOR and updated in the Loadstep.
*STATIC load step wuth Int_INC is mapped to NLPARM load collector with NINC=1/Int_INC.
*STATIC load step with MinIcr is mapped to NLADAPT,DTMIN load collector.
*STATIC load step with MaxIncr is mapped to NLADAPT,DTMAX load collector.
*STEP with unsymm=yes is converted to PARAM, UNSYMSLV.
*ENDLOADCASE conversion supported.
Dynamic NLGEOM=yes to Transient Nonlinear analysis.
*HEADER in the include file is moved to master include on conversion
*TIMEPOINTS converted to NLOUT, TIME,SET,<NUM>,time, list.