Mesh independent study

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Do we need to perform mesh independence study for the stresss analysis of the parts?

Tagged:

Answers

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited May 2015

    This is rarely done for structural analysis and more for CFD it seems to me,you should check with your professor if it is necessary for your analysis. 

     

    In the first run, accept the default element length. Mesh with the basic rules of thumb, Then run the analysis and observe the high stress regions. Remesh the localized areas of high stress (with smaller element length) and solve again. Compare the difference in the original and the new results. Continue the process until convergence is achieved (5 to 10% difference in strain energy / maximum stress value).

     

    To find out if the analysis in mesh independent, what we call mesh convergence, you will need to do a study, what can be called a mesh convergence study, here is a good video about such aspects

    https://altair-2.wistia.com/medias/rmretoumym 

Categories