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Cohesive Abaqus

Cohesive element modelling problem in ABAQUS

Dear All,

I am modelling a 3 point bend specimen with Cohesive elements tied to the upper and lower halves of the specimen in 2d.

The problem is that the CZ elements perform properly only for a combination of element sizes, i.e. a combination of element size of structure and CZ elements, for instance in my case the structure/specimen element size is 0.2mm and CZ is 0.001 or 0.002. For any other combination the adjacent elements bend as shown in the attached image.

I will be glad if someone could explain this behaviour and the solution.

bhaveshshrimali's picture

Interface Crack Propagation in Abaqus, using Cohesive Interaction



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:


manivannan's picture

cohesive simulation in abaqus

Hi all ,

       I am simulating Cohesive zone simulation of polymer coated steel using abaqus 6.9 ( Room Temp ).  The thickness of steel plate is 0.8mm ( 800 Micrometre). Thickness of PET ( Poly Polyethylene terephthalate ) is 0.03 mm ( 30 micrometre ). Cohesive zone is defined in between these two materials with zero thickness. I use standard traction seperation method embedded in abaqus 6.9. I have the following questions

(a) Regarding material properties,

1. I have given steel properties with elastic-plastic material type

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