Inertia Relief not working properly

Pedro Neves
Pedro Neves Altair Community Member
edited October 2020 in Community Q&A

Hello everyone,

 

I'm running a linear analysis of a formula student monocoque and I'm trying to constraint it using inertia relief (-2), but I'm not getting good results. The model is not being constrained correctly and the displacements are just huge (E+08). The weirdest thing is that I based my model on a previous model I had (few differences, mostly in the geometry) for which the inertia relief calculations are getting correct and so the analysis displacements and stresses (At least the mono doesn't dissapear out of nowhere).

 

I'll try to compare each one piece by piece, but I'm really not understanding why this calculation error is happening. 

 

I leave you here the two models I'm refering to and one picture just for a better visualization of the model.

 

<?xml version="1.0" encoding="UTF-8"?>image.png

 

mono_A.fem --> Inertia relief working

mono_B.fem --> Inertia relief not working

 

 

Thank you,

Pedro Neves

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Answers

  • Pedro Neves
    Pedro Neves Altair Community Member
    edited February 2020

    I found the problem: there were two 1D Elements that were just floating without any type of connection to the main body

     

     

    Thanks anyway,

    Pedro Neves

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