- OptiStruct 12.0 Update release highlights
- Stiffness, Strength and Stability
- Noise and Vibrations
- Kinematics and Dynamics
- General
- Topology Optimization
- Internal Responses (DRESP1)
- Optimization Output
- Optimization General Enhancements

*… release note for OptiStruct 12.0.212*

OptiStruct 12.0.212 업데이트의 상세한 내용은 아래와 같습니다.

**OptiStruct 12.0 Update release highlights**

**Cool Features**

- PARAM,AUTOMSET can be used to fix double dependancy issues with Rigid elements
- PARAM,RBE3FREE can be used to ignore the bad modeling practice of free RBE3 spiders
- PARAM,RBE2FREE can be used to ignore the bad modeling practice of rigid body rotation of RBE2
- Bolt pretension forces written to the ASCII .pret file
- The force deflection curve from Snap Through Analysis can be generated with PARAM,SNAPTHRU
- OTIME can be used for Transient heat transfer analysis
- AMSES calcualtion time reduced even more, and larger problems can be run.
- Output from Complex Eigenvalue analysis can be limited to only unstable modes
- Analysis results can be computed based on the results of SIMPACK MBD analysis
- PARAM,PRGPST can be used to control the amount of AUTOSPC output
- 1D element forces are now written to the .h3d file
- Thin shell bending elements can be automatically converted to membrane elements
- Overly stiff CELAS and CBUSH can be set to a reasonabale value automatically
- DTPL Data MAXDIM Automatically Set if the Input Value is Too Low
- Many enhancemets to mode tracking output

**Major Enhancements**

- ADJUST option is available to remove initial penetration in contact
- Gasket properties can be temperature dependent
- H3D CMS Super Elements can be repositioned (translated and rotated) in the residual run.
- Thermal conduction based on gap opening distance and closed pressure.
- For Fatigue analysis (normal modes with USET,U6 and modal FRF and transient analysis)
- Material properties can be frequency dependent for direct frequency analysis
- There is a fast parallel solver (FASTFR) for large scale modal frequency response
- CDS SE creation time has been dramatically reduced
- Von Mises stress calculated using the Segalman Method
- SPCFORCE and GPFORCE can be used as Optimization Responses

**Installation instructions**

- 12.0.212 should be installed. It is found at http://www.altairhyperworks.com/ClientCenterHWUpdateDownload.aspx?pro_cat=HyperWorks
- 12.0.210 is a major point release and can be installed on 10.0, 11.0, or 12.0. It can be found at: http://www.altairhyperworks.com/HWProductDownload.aspx?version=12.0&act=0

**Stiffness, Strength and Stability**

- The ADJUST Option is Available to Remove Initial Penetration in Contact
- Bolt Pretension Forces are Now Written to the ASCII .pret File
- Gasket Material Properties can Now be Temperature Dependent
- Gasket Transverse Shear Modulus can be Specified as Stress/Displacement or Force/Area Data
- Gasket Tension Stiffness can be Specified as a Stabilization Coefficient or the Direct Tension Modulus
- The Thermal Field From the Last Time Step of a Transient Heat Transfer Analysis can be Used for the Thermal Load
- Solid Element Properties Expanded to Support Navier Stokes Viscosity and an Advanced Tangent Matrix Estimation
- Composite Element Material MATX25 Enhanced to Support Failure Based on the Ratio of the Number of Failed Layers to the Total Number of Layers
- Force-Deflection Curve Output from Snap Through Analysis
- OTIME can be Used in Transient Heat Transfer Analysis
- Thermal Conduction Based on Gap Opening Distance
- Thermal Conduction Based on Contact Surface Opening Distance and Closed Pressure
- New Parameters
- Enhanced Subcase Information Entries
- New Bulk Data Entries
- Enhanced Bulk Data Entries

**Noise and Vibrations**

- Material Properties can be Frequency Dependent in Direct Frequency Response Analysis (Beta)
- Fast Parallel Solver for Large Modal Frequency Response Problems
- EIGRA (AMSES) Eigenvalue Calculation Time Reduced
- A File to Allow Optimization of CMS Super Elements can be Generated
- Sets of RIGID Elements can now be Specified with the Bulk Data SET Data
- EIGRA can Handle Much Larger Problems
- Run Time and Disk Space Usage Decreased When GPFORCE and MPCFORCE Output is Requested for Frequency
- Response and Transient Analysis
- The Output From Complex Eigenvalue Analysis can be Reduced by Only Outputting the Unstable Modes
- The Creation Time of CDS Super Elements Has Been Dramatically Reduced
- Modal Super Elements can be Created for Use in RecurDyn by FunctionBay
- Interior GRID Results Recovery for CDS Super Elements
- The RANDMOD ID is now written to the XYPUNCH header for PSDF output
- The DMIGMOD data can now be used to translate and rotate CMS Super Elements
- New Parameter Data
- Enhanced Subcase Information Entries
- New Bulk Data Entries
- Enhanced Bulk Data Entries

**Kinematics and Dynamics**

- Preload can be Taken into Account During Flexbody Generation
- Residual Vectors can be Used to Increase the Accuracy of Flexbodies
- Analysis Results can be Generated Using the Results from SIMPACK Analysis
- Enhanced Solution Control Data
- Enhanced Bulk Data Entries

**General**

- Gap Element Forces can Now be Plotted in HyperView
- Printing of Inertia Relief Rigid Body Force and Acceleration Controlled by PARAM,PRINFACC
- Rigid Elements with Double Dependency Issues
- THICKNESS Output to the .h3d File for Analysis Runs
- The GEOM3, DPDT and GPL Data Blocks have Been Added to .op2 File for PARAM,POST,-2
- PARAM,PRGPST can Now Control the Amount of AUTOSPC Output
- 1D Element Forces are Now Written to the .h3d File
- CFAST Element Forces are Now Written to the .op2 File
- Thin Bending Shell Elements can Now be Automatically Converted to Membrane Elements
- Overly Stiff Bushings and Springs can be Automatically Set to a Reasonable Value
- CBAR and CBEAM can Optionally Reference PBEAM and PBAR Data, respectively
- Von Mises Stress and Strain results for Random Response Analysis based on the Segalman Method
- PARAM, RECOVER can be used to output the full-structure modes during Component Mode Synthesis
- If PARAM,RECOVER is specified without an .op2 output request, an error will be issued
- MPCFORCE for RESVEC modes is now written to the .op2 and .pch files
- Von Mises Stress and Strain results for Random Response Analysis based on the Segalman Method
- GPFORCE for RESVEC modes is now written to the .op2 and .pch files
- Modal STRAIN results are available for frequency response and transient
- Von Mises Stress and Strain results for Random Response Analysis based on the Segalman Method
- PARAM,RBE3FREE can be used to disable ERROR 772 due to free spiders on RBE3 elements

**Topology Optimization**

- DTPL Data MAXDIM Automatically Set if the Input Value is Too Low

**Internal Responses (DRESP1)**

- SPCFORCE can Now be Used as an Optimization Response
- GPFORCE can Now be Used as an Optimization Response

**Optimization Output**

- Design Sensitivity Analysis for Frequency Response in H3D
- Design Variable File for the Control of CMS Super Element Modal Information
- Enhanced Bulk Data Entries

**Optimization General Enhancements**

- PARAM,TRAKMTX Added to Control the Output of the Mode Tracking Matrix
- PARAM,TRAKMETH Added to Control the Method Used for Mode Tracking
- PARAM,MFILTER Added to Specify the Threshold Value for Mode Tracking
- ASSIGN,UPDATE Added CONM2 data (220)