User login


You are here

VUMAT general queries


I am beginner in abaqus and I want to write a VUMAT for VIB method to simulate fracture, while writing VUMAT i encountered following problems 

1) For 2D plane stress problem how to calculate strainInc(*,3). It is increment for that step or value of strain till that step?

2) What is effect of that defination on answer I am getting?

3) I am comparing my code of elastic VUMAT with inbuilt abaqus results however results are quite differant, then I observed as abaqus inbuilt is using logarithmic strains and i was using engineering strains. then i calculated strains for Vumat like




and used this e in my relation to get stressNew answers are matching 

so i want to know is it correct way to calculat strains?


Free Tags: 
Subscribe to Comments for "VUMAT general queries"

More comments


Subscribe to Syndicate