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cohesive behaviour

Postdoctoral Position in Applied Mechanics

<p>A post-doctoral position in the general area of continuum simulations of high-strain rate impact phenomena is available in the Mechanical Engineering Department at Northeastern University. The specific goal of the project is to investigate the mechanics of cohesion following high velocity impacts. Knowledge of finite element theory, contact mechanics, plasticity and cohesive zone using customized codes and Abaqus are required. Experience with writing own finite element codes, Abaqus user subroutines and Python code will be helpful for the position.

bhaveshshrimali's picture

Interface Crack Propagation in Abaqus, using Cohesive Interaction

Hi

 

I am trying to model interface crack propagation in Abaqus using Cohesive Interaction (default module in Abaqus). My model consists of two rectangular domains attached to each other by the longer edge. I am defining two surfaces on each of these domains and defining traction separation laws for these surfaces. There is a small portion in the middle for which I am not defining any traction separation law (thereby making it my notch). I am then applying displacement controlled loading on the remaining two longer edges. I am having two set of problems:

 

Compatibility: Surface-Based Cohesive Behavior in UEL

Hi all,

 

I have been trying to model the surface interaction between two blocks of material using surface-based cohesive elements (*cohesive behavior). This works well in ABAQUS CAE (standard) when I set the material properties as "Mechanical, Elastic" so no problem with that.

However, I would now like to use the material properties from a fortran code. To do this, I was planning on defining the elements using *UEL with an overlay to record all the values. Is this compatible with cohesive zone elements? 

 

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