FSI problem

alpharays786
alpharays786 Altair Community Member
edited October 2020 in Community Q&A

Hi,

 

I'm having problem with transfer radioss result of modal analysis (eigenmode) into model in AcuConsole. Animating of radioss result show different scale with model in AcuConsole. Then, when transfer AcuConsole suddenly shutdown.

I'm suspecting the different of default unit used between both solver which cause different scale.

 

Radios unit:-

kPa

density = tonne/mm^3

 

AcuConsole unit:-

Pa

density = kg/m^3

 

Anyone have idea how to solve this?

Can or not rescale radioss result into compatible AcuConsole unit? Or need to run modal analysis with acuconsole unit?

 

Thanks

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Answers

  • ydigit
    ydigit
    Altair Employee
    edited April 2015

    AcuConsole' Eigenmode Manager has the option of scaling, however I have never used it.

     

    I would suggest using Meter, Kilogram, Seconds for the OP2 file using OptiStruct.

  • alpharays786
    alpharays786 Altair Community Member
    edited May 2015

    Hi,

     

    I'm studying FSI loadcase using own model and having few problems. Need recommendation or idea how to solve this.

     

    1) AcuConsole stop running and shut down suddenly when transfer 'simple BC' from Radios result in Eigenmode Manager. What could be happened?

     

    2) I'm having below error when acuPrep is running, any idea what is the problem?

     

    Processing SIMPLE_BOUNDARY_CONDITION( 'Part1' )

    acuPrep: *** ERROR: Parameter nodal_x_modes is unspecified

    acuPrep: *** ERROR: Parameter nodal_y_modes is unspecified

    acuPrep: *** ERROR: Parameter nodal_z_modes is unspecified

     

     

    Thanks

    Regards
  • ydigit
    ydigit
    Altair Employee
    edited May 2015

    Could you upload the .INP file?

     

    In case it is AcuConsole issue, it might be tough to troubleshoot on forum. Local Altair support office would be in better position to help.

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