We have an exciting announcement about badges coming in May 2025. Until then, we will temporarily stop issuing new badges for course completions and certifications. However, all completions will be recorded and fulfilled after May 2025.
Structural & Thermal

Structural & Thermal

  1. All Categories
  2. Structures - Structural & Thermal
  3. Why does load multiplier reduce by 1 in eigenvalue buckling when I turn on large deflection in the base structural analysis?

Why does load multiplier reduce by 1 in eigenvalue buckling when I turn on large deflection in the base structural analysis?

Tagged: 19.2, buckling, mechanical, Structural and Thermal/ Buckling, structural-and-thermal, structural-mechanics
    • March 17, 2023 at 9:00 am
      FAQFAQ
      Participant

      If the base analysis is linear, the total perturbation load multiplied by the buckling load factor represents the ultimate buckling load. The prediction of the buckling load can be written: F_buckling = 0 + lamda * F_perturbed. If the base analysis is nonlinear, the ultimate buckling load is sum of the restart point load and the additional perturbation load: F_buckling = F_restart +lamda*F_perturbed. By default setting the “Keep Pre-Stress Load-Pattern” property to “Yes” retains the loading pattern from the Static Structural Analysis in the Eigenvalue Buckling analysis. Therefore, you will find load multiplier reducing by 1 when changing base analysis from linear to nonlinear.

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.

© 2025 Copyright ANSYS, Inc. All rights reserved.