Technical note Open Access
Asymmetric Elastoplastic Behavior and Failure of GEM Foils
G. Raffone
The nonlinear isotropic power hardening and the cohesive zone material (CZM) [1] criteria are applied in ANSYS [2] finite element simulations to analyze very large deformations of the GEM foils up to the failure in uniaxial tensile tests. Some data available in literature concerning both the PI/Cu and the grain boundary interfaces are utilized. The computed progressive plasticization of the perforated thin multilayer agree very well with the experimental results published by some researchers [3–6]. However the present work provides a different explanation of that behavior (already suggested in an earlier note of the author [7]) and it should be considered as a critical review concerning the conclusions of the aforementioned works.
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INFN-20-16-LNF.pdf
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- Publication date:
- November 4, 2020
- DOI:
-
- Keyword(s):
- thin films, polymers, cohesive zone material, adhesion, grain boundaries.
- Communities:
- License (for files):
- Creative Commons Attribution 4.0