I’m using ABAQUS to create a 3D End Notched Flexure test. Two beams with a cohesive element interface and a pre-crack make up the end notched flexure specimen. A three-point bend design is used in the test. For the ENF arms, solid components (C3D8) are used, and the interface is modeled with finite thickness cohesive elements (COH3D8). The ends of the specimen are pinned and roller conditions are applied, and a displacement is applied in the middle.
Within the first few increments, the analysis fails. The force residuals haven’t converged or the cohesive parts have severe distortion, according to the error message. I tried both a static general step and a dynamic implicit step with a quasi-static specification. Refinement of the mesh and reduction of the increment size have had no effect. It didn’t help to use cohesive contact instead of cohesive elements.
Can someone offer suggestions about how to fix these issues?
Thank you very much.
- Training Expert asked 11 months ago
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Hi,
- Training Expert answered 11 months ago
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