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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.
I also attach the input file.
I am not sure about the node numbering issue of Cohesive elements. I meshed the elements assigning sweep path along normal to the crack propagation direction.
With regards,
Abhishek
Attachment | Size |
---|---|
CZbend.jpg | 391.23 KB |
ML4CZ1.pdf | 15.07 MB |
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Good luck
Frank