General Mechanical

General Mechanical

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Drop test on FRP wrapped beam

    • Prasad Adhav
      Subscriber

      Hello,

      I have modelled my beam with FRP wrapping in ACS pre. For drop test when I used LS-DYNA, it returned following errors.

      An Error has Ocurred When Trying To Load Material CONC-35MPA

      Unsupported higher order elements detected. Element Order must be Linear for LS-DYNA.

      It was  impossible to match the Material Definition with a supported definition :: CONC-35MPA

      The demanded solver was not found in the specified path.

      What can I do to resolve these errors?

      Please reply as soon as possible.

      Regards.

    • Reno Genest
      Ansys Employee

      Hello Prasad,

      You are using ACP-Pre to model your beam with shell elements correct? Could you reply with a few screenshots showing your model and the error messages?

      You have to use linear elements in WB LS-DYNA. Make sure your mesh Physic Preference is set to "Explicit" and Element Order to "Linear":

      This should take take of the element order error message.

       

      Reno.

    • Reno Genest
      Ansys Employee

      Hello Prasad,

      Material model CONC-35MPA from Engineering Data is not supported by LS-DYNA. Please use a different material model with supported material properties. In the LS-DYNA system, click on "Engineering Data" branch:

      And then click on "Filter Engineering Data":

       

      This way, you will only see the material properties supported by LS-DYNA in the toolbox. Build your material using these material properties and it will work.

       

      Reno.

    • Reno Genest
      Ansys Employee

      Hello Prasad,

      Finally, for the "The demanded solver was not found in the specified path." error, it seems your Ansys LS-DYNA installation did not complete properly and you don't have the LS-DYNA solvers in the following Ansys installation path:

      C:\Program Files\ANSYS Inc\v242\ansys\bin\winx64

      You should see the following solvers in the above path:

       

      If not, reinstall Ansys.

      Which version of Ansys are you using? There is one version where the LS-DYNA solvers did not install properly and there is a service pack on the Ansys Customer Portal to solve this:

      support.ansys.com

       

      Let me know how it goes.

       

      Reno.

    • Prasad Adhav
      Subscriber

      Dear Mr. Reno,

      Thank you so much for such an elaborative reply. I shall add new material properties for M35 grade concrete.

      The meshing was program controlled, as you said I changed it to Explicit and linear preferences. However, it responded with following errors. The model is a reinforced concrete beam with FRP wrapping at the mid span, modelled as surfaces attached to the solid RC beam.

      Regarding LS-DYNA solvers, I am using Ansys 2024 R1 Student version. I could neither find the directory v242 nor the LS DYNA solvers. Shall I reinstall ansys? or is there any other module that I can use for drop test?

      Thank you so much for your help,

      Sincere regards, 

      Prasad Adhav.

       

    • Reno Genest
      Ansys Employee

      Hello Prasad,

      Use the v241 folder.  Make sure you have LS-DYNA solvers. If not, reinstall Ansys.

       

      Now you have a meshing issue. Please create a new post with details of the problem and error messages with screenshots.

       

      Reno.

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