1. New Features and Enhancements

New Features

  • One Step, a new project type, is a rapid forming simulation technique which uses the final part geometry to estimate the size of the flat blank and evaluate formability. One Step is best used in the early stages of product and process development to identify potential issues, like splits or wrinkles, before you invest in detailed tooling design.

  • Reflection Lines (also known as zebra stripes) is a new postprocessing function in the Analysis tab that allows you to easily identify defects in surface quality, like wrinkles or sudden changes in curvature.

Enhancements

  • Drawbeads:

    • Calculate the restraining and uplift forces of a 2-D drawbead using a new method for fast and accurate prediction.

    • Access three new bead profiles to support additional use cases.

    • Set bead height at zero, allowing you to exclude drawbead from your model without changing the geometry.

  • Material Library:

    • Access material data from ThyssenKrupp and Voestalpine.

      Note:  You cannot modify material data from these sources.

    • Interact with an updated kinematic hardening material model in the Material Editor.

      • For materials using the Barlat'89 or Barlat'2000 model, we implemented kinematic hardening according to the Chaboche-Roussilier model. Review the LS-DYNA Keyword Manual, Vol. II, MAT_036 for information about how to calculate CRCn and CRAn values.

      • We also implemented support for the Vegter model (MAT_136). To use the model, you must input Normalized Yield Stress (FUN), First Normalized Yield Stress for Plain Strain Test (FPS1), Normalized Position of Second Principal Stress Under Plain Strain (ALPS), and Shear Stress (FSH) for 0°, 45°, and 90°.

        You may also define the distribution of hardening used in your curve fitting. The parameter Alpha = 0 represents pure kinematic hardening while Alpha =1 represents pure isotropic hardening.

    • When using the Barlat'2000 model, you may now input From Test Data instead of alpha values.

      Input the following test data and click the calculator icon. The application completes the curve fitting and updates the Yield Locus plot.

      Required test data:

      • Yield Stress (0°, 45°, and 90° directions)

      • XX, YY, and XY Components of Stress on Yield Surface

      • R Value(0°, 45°, and 90° directions)

      • XX, YY, and XY Components to Yield Surface

  • Mesh Check:

    • You can now choose to Show Critical Vertices from the Mesh Check task panel, a feature that highlights boundary vertices with exceptionally high curvature. This feature allows you to quickly identify potential issues along boundaries, refine your mesh more efficiently, and gain deeper insight into regions prone to defects like thinning, wrinkling, or cracking.

    • Mesh Check now displays the Outer Boundary of your part. This feature helps ensure the outer contour is clean and simulation-ready, improving accuracy in tool contact, material flow, and overall mesh integrity

    • You can now perform a Mesh Check on adaptive meshes.

      Note:  Adaptive constraints can interfere with the automatic repair process. If automatic repair fails in areas with adaptive constraints, you may need to repair issues manually.