Optimization is now supported for One Step Transient Thermal Stress Optimization. Only Structural responses are currently supported.

DRESP1 Bulk Data entry is enhanced to support CWELD force response for Modal Frequency Response Analysis.

New continuation line with COORD keyword is available. With this enhancement, the optimization response will be evaluated according to the system specified. The supported responses are DISP, SPCFORCE, GPFORCE for grids and STRESS, STRAIN and FORCE for plates.

The mode corresponding to the highest modal participation in Frequency Response Analysis will be used as response for normal mode optimization.

The enhancement is done on sensitivity such that it can now handle a large size optimization model such as topology optimization.

This output will be used to estimate the objective function corresponding to the modified constraint bound.

Mass is not penalized anymore such that the force due to ACCELi by a given volume fraction will be correct.

Seam weld fatigue analysis and optimization to model seam welded components. Fillet welded joints and Overlap joints are supported. The Volvo method is used to calculate the hot spot stress from nodal forces on weld lines.

Spot weld fatigue analysis and optimization to model spot welded components. CWELD, CBEAM/CBAR, CHEXA+RBE3 are available to model spot welds using Rupp’s method. The weld element diameter can be a design variable for optimization.

The DOPTPRM, APPROX parameter can be used with options HIGH, MEDIUM, or LOW to determine the quality of approximation. Lower quality approximation results in lower memory and computational requirements.

Failsafe topology optimization is used to design structures able to survive normal loading conditions when damage occurs, either as complete failure of a structural member or as partial damage to a larger structural part. This option generally yields concept designs exhibiting increased load path redundancy. Damage is represented by additional load cases in which blocks of material are removed from the structure, with the number of load cases depending on the designable domain and the user-defined damage size. Failsafe optimization operates within a MPI framework designed to efficiently solve a large number of load cases. FAILSAFE continuation line is added in DTPL bulk entry to activate this feature. Fail-Safe optimization runs in SPMD mode and requires “–fso” script option.

The supported response is the magnitude of bore deformation for different order.

This new option can be used in Multiple Model Optimization (MMO) too when the size of some models is different from others. For non-MMO case, this scaling option is same as the scaling option available in SLAVE continuation line.

Root Mean Square (RMS) function is now available for DRESP2/DLINK2.

Shape Output for Shape Optimization via the SHAPE I/O Options Entry is now also available in the .op2 file.

Signed von Mises Stresses are now available as Responses for Optimization. The SSVM1, SSVM2, SSVMB, and SSVM Static Stress Item Codes are now supported on the ATTA field of the DRESP1 Bulk Data Entry.

Results for the converged iteration in Topology Optimization are now available and can be activated via keyword=H3D and frequency=CONV on the OUTPUT I/O Options Entry.

Sensitivity of responses under Acceleration loading via ACCEL, ACCEL1, and ACCEL2 bulk data entries is now available.

Forces from Weld (CWELD) elements are now available as responses in Optimization. Static Force Item Codes are now available for CWELD elements.

Stress and Strain responses based on the Neuber correction method are available as Optimization responses. Static Stress/Strain Item codes are now available for Neuber Correction.

Surface Stress responses are now available for solid elements in Optimization. Surface Stress Item codes are now available to automatically create stress responses on surface of solid elements.

The Response type, Component, Grid/Element ID’s, Subcase ID’s have been added to the H3D file for sensitivity output.

RADIOSS Optimization (RADOPT) now supports multiple subcases.

The MAT9ORT material entry can now be referenced on the TYPE field of the DVMRELi entries. Material optimization using the MAT9ORT entry is supported.

Subfolder for each outer loops is automatically created so that output files are stored in more organized way.

Multi-Model Optimization is now supported for NLGEOM, IMPDYN, and EXPDYN subcases.