OptiStruct Interface 2021.1 Release Notes
OptiStruct Interface
New Features
- ID Pool for Elements
-
- Connector elements (RBE2,RBE3,RJOINT,RBE1, GENEL,etc), Aeroelasticity panels, and structural elements can share same ID space in OptiStruct.
- To handle OptiStruct behavior, the interface now supports ID pool for structural and connector elements.
- Duplicate ID's are supported for elements, properties, and aeroelasticity panel HyperMesh entities in the OptiStruct interface.
- A new solver option added in import browser, “renumber the ids to match solver ids,” for elements with shared id space are synced with solver ids during the import process.
- Mechanism Browser
-
- Support of Mechanism Browser is extended to OptiStruct interfaces.
- Create and articulate a kinematic mechanism based on FE mesh using available joint types in the Mechanism Browser.
- In HyperWorks, the browser is invoked through the Mechanism tool in the Assembly ribbon.
- Loadstep Inputs Entity
-
- New entity to migrate OptiStruct bulk cards from loadcolletor to loadstep inputs entity with engineering configuration.
- Some of the bulk cards, for example EIGRL, EIGRA, EIGC, NLPARM, NLOUT, NLADAPT, and so forth, are migrated to the loadstep inputs entity.
- Visualization Support for LOADADD
-
- LOADADD card is mapped to loadcollector entity which is defined with scale factor for each load in the list.
- Visualization of LOADADD is possible as vector plot or contour including the scale factors from the Solver Browser.
- Load referenced in LOADADD must be new load management entity.
- Nonlinear Analysis Enhancements
-
- NLPRINT bulk card supported in loadstep inputs entity to control printing of certain information to the _nl.out file for nonlinear analysis.
- NLENRG bulk card supported in loadstep inputs entity to print energy variables for implicit nonlinear static and implicit nonlinear transient analyses.
- BASELIN bulk card supported in loadstep inputs entity to correct the acceleration record to avoid displacement shift.
- Optimization Enhancements
-
- Method of Moving Asymptotes (MMA) option added to OPTMETH parameter in DOPTPRM card.
- DTPL card enhanced with LEVELSET continuation line to support level set method in topology.
- Thermal Analysis Enhancements
-
- IC subcase selection in transient heat transfer subcase allows reference to steady state or transient thermal subcases.
- Output Request Enhancements
-
- TOTALFORCE option to request total force (a summation of single-point force and applied load).
- PSDFC option to output PSD, RMS and RMS (cumulated) results from random response analysis.
- RESULTANT option to enable output of resultant forces and moments for internally generated sections.
Enhancements
- General Enhancements
-
- Enable Large or Standard format export setting for individual includes.
- TABLED1/TABLES1/TABLEM1 cards with large precision are exported in comma-separated format by default.
- DT and N fields in TSTEP export as blank for nonlinear transient analysis.
- PARAM, LGDISP,-1 removed from OptiStruct interface.
Resolved Issues
- HyperWorks was missing “export DMIG in large format” option.
- Export issues with MCOHED card in comma-separated format.
- NLPCI import issue with undefined type in NLPARM card.
- SUBID field in IMPERF card does not user defined subcase ID.
- SORIENT field export issue with contact card.
- DREPORT can't be activated for a response that is referenced in a constraint.
- MATHE (OGDEN) bulk card exports undefined fields as zero.
- Remove obsolete option LOADTEMP from SYSSETTING card.