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Solver Enhancements for 2023.0

Enhancements have been implemented to improve the performance of analysis solvers, and to provide you with better solutions.

Improved Warpage Calculation Accuracy for 3D Analyses

Warpage analysis accuracy for 3D meshes with the residual stress model has improved for some materials with high Poisson's ratio (where the Poisson's ratio is greater than 0.5). The improvement is mostly for unfilled polymers. A small number of filled polymer composite materials may also have changed warp results.

Improved Warpage Calculation Accuracy for Midplane and Dual Domain Analyses

The accuracy of Warp analyses, without manual constraints, depends on the automatic selection of constraint nodes to fix the rigid body motion. In the new release, the automatic constraint selection has been improved. This change may bring minor result changes in all Midplane and Dual Domain Warp cases.

In addition, in previous releases when a manual warp constraint was applied on a Dual Domain model, the constraint was effectively applied on both the selected node and the corresponding matched node on the opposite surface of the Dual Domain mesh. In the new release, the manual warp constraint is applied only on the selected node. Users of Dual Domain mesh with manual warp constraints may notice a difference in the local deformation around the manual constraint.

Enhancements for Midplane Injection-Compression Analysis

An option has been added to the press compression profile which allows the final part thickness of a Midplane injection-compression analysis to be less than the nominal element thickness. This option is appropriate for mold designs where the closing movement of the press is not blocked by parting plane contact of the two mold halves. In such cases, the final part thickness is determined by the amount of polymer injected.

A new Cavity thickness evolution result has been added to visualize the final part thickness and the thickness evolution during the injection-compression molding process.

Changed Results for Differential Cooling Effects Feature when a Part Insert Overlays the Part

The calculation of differential cooling effect during a 3D Warp analysis has been significantly improved if a part insert overlays the part. This change may cause significant changes in the displayed temperature at the contact surface and the differential cooling deflection result in some 3D Warp cases.

Changed Results for Core Shift Analysis with Multiple Cores

The calculation of core shift displacement has been significantly changed in some core shift analyses with multiple cores or part inserts. The change allows the cores/inserts to continue moving independently when one of the cores/inserts touches the mold surface and freezes there.

Fiber Orientation Prediction Improvement in 3D

The algorithm used in the fiber orientation computation for 3D models has been improved. The prediction now shows a stronger transverse fiber alignment in the core region, near the center of the thickness, and is in better agreement with experimental data. The fiber orientation prediction in the shell regions remains similar to previous releases. The influence of this fiber orientation improvement on the warpage prediction is expected to be small.

Improved Sink-Mark analysis for 3D analyses

The sink-mark analysis results have been improved for some 3D cases. In such cases improved sink-mark location and sink-mark values are now predicted.

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