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OptiStruct New Features

What's new in OptiStruct 2017 ? Watch the video to see what's new in the most recent release of OptiStruct.

View all HyperWorks 2017 New Features See all the HyperWorks new features available in this release. Go to the New Feature Library
OptiStruct 2017 provides over 130 new features and enhancements. Many improvements have been made for nonlinear capabilities of the OptiStruct solver concerning nonlinear static analysis, nonlinear transient dynamic analysis, and new Hyperelastic materials. Further enhancements have been made for NVH and thermal analyses. The new release also provides similar amounts of enhancements for its market leading optimization technology.

Here are some of the highlights of the OptiStruct 2017 release:

Nonlinear Analysis

  • Transient dynamic analysis with nonlinear materials, nonlinear geometry, and contact.

  • Large displacement support for 2D shell and CELAS elements has been added. Finite sliding (continuous sliding) is supported. This can be used to analyze gear interaction.

  • Loads and friction can be defined to be time dependent.

  • The Ogden model is now supported for Hyperelastic Materials.

  • The Puck failure criteria is supported for composite materials.

  • User-defined materials can be used.

  • Solid elements can have their own material coordinate systems.

Noise and Vibration

  • Brake Squeal Analysis is supported.

  • Complex eigenvalue analysis can be used for acoustic analysis.

  • Inertial Relief analysis can be performed for models with more than six rigid body modes.

Thermal analysis

  • Transient temperature at multiple time steps can now be applied in thermal-structure coupling analysis. The structural analysis can be nonlinear.

  • SPCFORCE output is available to measure the power output.

General analysis enhancements

  • Domain Decomposition can be applied to speed up Direct FRF, preloaded modal FRF with AMSES, direct coupled fluid-structure FRF (NVH), normal modal, preloaded normal modal, linear buckling, and nonlinear transient analyses.

  • The maximum model size for linear static analysis can been increased.


  • Failsafe Topology Optimization is available.

  • Bore deformation can be constrained during optimization.

  • One step transient thermal analysis can be used with optimization.

  • Seam and spot weld fatigue constraints have been added.

  • Neuber stress and strain responses have been added.

  • Surface stresses of solid elements can be used in optimization. There is no more need for “skin” elements.


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Cylinder bore distortion analysis and optimization Brake squeal analysis Thermal fluid-structure interaction OptiStruct-AcuSolve coupling Failsafe topology optimization Seam and spot weld analysis and optimization Debugging and post-processing of nonlinear results Nonlinear transient analysis Continuous sliding contact
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