Skip to main content

Blog posts

Reporting stress from FEA

Submitted by onkar bhise on

I have some doubts about reporting stress in FEA.

For a static analysis, if I am getting high surface stresses in a section, however stress is reducing throughout the thickness.

I checked for the membrane stress at that section & it is approx. 75% of the max. surface stress. However, sectional nodal average stress is approx. 45% of the max. stress.

Which stress should I report in such situation?Thanks.

Onkar 

 

 

CONTACT set up in irregular surface.-analysis in Ansys

Submitted by one on
opinion
Non linear FEM
contact analysis
seet pile

Hi all, i am the final semester student in.Struc Mecha.For my final
project i have to model combine sheet pile with  FEM. i used ansys for
set up the model. Combination of AZ,HZ n RZ profile were developed
sheet pile. In my modelling i applied frictional contact to define all
the connection between two parts. When i run my calculation, it does
not converged when body get  contact. I was applied spring and small
load step in set up.but still does not work too..if anybody have any

Complementary Strain Energy - Non-linearity

Submitted by ramdas chennamsetti on

Hi all!

I read that the "cmplementary starin energy of a structure is not equal to sum of the complementary strain energies of it's components, if there is non-linearity like geometric"

That means for e.g. if I consider a truss stucture subjected to loading so that it undergoes geometric non-linearity, then the sum of the complementary strain energies from members is not equal to complementary strain energy of the structure.

 I request somebody to explain why is it so??

 Thanks and regards,

- Ramdas

Subscribe to Drupal blog posts