General Mechanical

General Mechanical

Topics relate to Mechanical Enterprise, Motion, Additive Print and more
  1. All Channels
  2. General Mechanical
  3. Modal analysis on static structural results: deformed + prestressed

Modal analysis on static structural results: deformed + prestressed

    • December 16, 2019 at 10:55 am
      StefvanH
      Subscriber

      Dear all,


      I am studying a flexure joint and I am interested in the Eigen frequencies when the mechanism is deformed a certain degree.


      To do this, first I conduct a static structural analysis with large-deflection on. This deforms the mechanism and calculates stresses.


      Next I perform a modal analysis on the results from the static structural. In the results from the modal analysis, the flexure joint seems undeflected... Results do change if I change the amount of flexure joint deformation in the static structural analysis, so I am confident that the modal analysis takes the right results (both deformed geometry and prestressed material).


      Does anyone know how to visualize the mode shapes on the deformed geometry? Currently the mode shapes (undeflected flexure) do not correspond with the frequencies (deformed flexure).


      Thanks


      Stef


      Ps. Attached you find how I coupled the modal analysis to the static structural.

    • June 13, 2020 at 3:04 pm
      omerfrkunl
      Subscriber

      Hi StefvanH


       


      Please look at the link: https://www.simutechgroup.com/tips-and-tricks/fea-articles/160-fea-tips-tricks-ansys-14-pre-stressed-modal-analysis-nonlinear-static-analysis

    • December 28, 2022 at 10:44 am
      bhagwantP
      Ansys Employee

      Hello StefvanH,

      Found one more add on link for your reference:

      https://www.youtube.com/watch?v=AYSACqgFMFo

      Thanks

Viewing 2 reply threads
  • The topic ‘Modal analysis on static structural results: deformed + prestressed’ is closed to new replies.
Ansys Innovation Space

Exploring the Power of HPC and Cloud Computing

Join us for this insightful webinar to discover how HPC and cloud computing unlocks the full potential of engineering simulation. Whether you are an engineer, IT manager, researcher, or technology enthusiast, this webinar provides the knowledge and tools to enhance your simulation workflows and drive innovation in your industry.

The Road to Innovation is Driven by Simulation

Join us for Driven by Simulation, an exciting new video series that shows how simulation enables the rapid innovation transforming the way we move — on the street, off-road, or at the track. Each episode celebrates breakthrough tech that’s paving the way for safer, faster, cleaner, more connected driving experiences.

Tensile Test Simulation Best Practices

It is fascinating to compare experimental and simulation test results for a tensile test specimen. The ability to conduct tests virtually, rather than physically, utilizing virtual simulations for testing not only increases efficiency but also leads to significant cost savings. In this crosstalk, we will address some of the challenges typically encountered in uniaxial tensile simulations. 

Ansys Blog

Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.

© 2024 Copyright ANSYS, Inc. All rights reserved.

Ansys does not support the usage of unauthorized Ansys software. Please visit www.ansys.com to obtain an official distribution.