General Mechanical

General Mechanical

Viscoelastic Foam Material Definition

    • learn13
      Subscriber

      I'm having difficulty finding material definitions fitting a viscoelastic foam within ansys or within the many online resources.


      Using Prony seems an absolute must, however I do not have data to input in order to model viscoelasticity. Ideally, modifying structural steel NL would serve as a great start.


       


      Thank you.

    • Keyur Kanade
      Ansys Employee

      It looks like question on ANSYS. Should I move this to Structural Mechanics so that you would get better reply. 


      Regards,


      Keyur

    • learn13
      Subscriber

      Great suggestion! If you think it will help, I would appreciate it.

    • Keyur Kanade
      Ansys Employee

      Ok. Then I am moving this to Structural Mechanics category. 


       


      Regards,


      Keyur

    • Sandeep Medikonda
      Ansys Employee

      Hi, 


      I would recommend you to axelproducts or datapointlabs for material data.


      Yes, you would need to fit the data using prony-series parameters.


      You might want to fit your data to a hyper-elastic material model such as Ogden 3rd or 4th order first? Structural Steel behavior is no way close to how a foam material would behave. One of the biggest challenges in capturing Foam materials is to account for the incompressibility.


      For just hyper-elastic data we have a group of materials you can start with in Engineering Data Sources itself.


      Regards,
      Sandeep
      Best Practices to post on the Student Community

    • Ashish Khemka
      Ansys Employee

      You may also refer to one of good article here:


       


      http://ansys.net/collection/1113


       


      Regards,


      Ashish Khemka

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