impossible displacement and no von mises strain

mirko088
mirko088 Altair Community Member
edited October 2020 in Community Q&A

Hi, I have a problem with my model . This is my first analysis with optistruct. 
By displaying the results of the analysis I get an off-scale shift, also I don't get the results in Von Mises. In the skin it gives me a value of zero while in the solid it gives me no value. What are the problems? I have attached a model and some images. The constraint is an interlocking while the forces are: gravity, centrifugal force, drag and lift. 

<?xml version="1.0" encoding="UTF-8"?>Annotazione 2020-05-25 195253.png

<?xml version="1.0" encoding="UTF-8"?>Annotazione 2020-05-25 195253s.png

Unable to find an attachment - read this blog

Tagged:

Answers

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited May 2020

    Make a simple test with ONLY gravity load?

     

  • mirko088
    mirko088 Altair Community Member
    edited May 2020


    Hi thank you for the interest, I made the mesh again because I had connectivity errors, the problem is that I get too high displacements. I am considering the centrifugal force through the Rforce card and then I would have a lift force along Z. If I run the analysis with only the Rforce load I get a displacement of 44 mm while as soon as I also insert the lift I get a displacement of 8 meters. Where am I wrong?

Categories