Ansys Assistant will be unavailable on the Learning Forum starting January 30. An upgraded version is coming soon. We apologize for any inconvenience and appreciate your patience. Stay tuned for updates.
General

General

  1. All Categories
  2. Structures - General
  3. Are there any differences between the Wiliams-Landau-Ferry Equation used in ANSYS Mechanical vs Workbench LS-DYNA for a visco-elastic material?

Are there any differences between the Wiliams-Landau-Ferry Equation used in ANSYS Mechanical vs Workbench LS-DYNA for a visco-elastic material?

Tagged: Explicit - LS-DYNA, export, mechanical, structural-mechanics
    • March 17, 2023 at 8:59 am
      FAQFAQ
      Participant

      Yes, there is a difference in the formula used: In ANSYS Mechanical, the Williams-Landau-Ferry Equation is described as log(a_T) = C1 * (T – T_ref)/(C2 + (T – T_ref)) . However, in Workbench LS-DYNA, the WLF Equation is described as: O(T) = exp( -A * (T – T_ref)/(B + (T – T_ref)) . Hence, the conversion is A = C1 / log10(e), B = C2 It is important to keep this in mind while specifying the material parameters in both codes.

Featured Articles

Introducing Ansys Electronics Desktop on Ansys Cloud

The Watch & Learn video article provides an overview of cloud computing from Electronics Desktop and details the product licenses and subscriptions to ANSYS Cloud Service that are...

How to Create a Reflector for a Center High-Mounted Stop Lamp (CHMSL)

This video article demonstrates how to create a reflector for a center high-mounted stop lamp. Optical Part design in Ansys SPEOS enables the design and validation of multiple...

Introducing the GEKO Turbulence Model in Ansys Fluent

The GEKO (GEneralized K-Omega) turbulence model offers a flexible, robust, general-purpose approach to RANS turbulence modeling. Introducing 2 videos: Part 1 provides background information on the model and a...

Postprocessing on Ansys EnSight

This video demonstrates exporting data from Fluent in EnSight Case Gold format, and it reviews the basic postprocessing capabilities of EnSight.

© 2026 Copyright ANSYS, Inc. All rights reserved.