The Addition of Cohesive Wedge Elements into the Elastic Plastic Impact Computation (EPIC) Code
Technical Report,01 Oct 2017,31 Jan 2018
Southwest Research Institute Minneapolis
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This report documents the addition of cohesive wedge elements into the 2017 beta version of the Elastic Plastic Impact Computation EPIC code. These elements allow the attachment of triangular-faced tetrahedral elements. This new capability allows symmetric brick elements 24 tetrahedral elements arranged in a hexahedron to be attached to other symmetric brick elements using one layer of cohesive wedge elements. The cohesive wedge elements use the cohesive material modelimplemented previously by Beissel to simulate bond strength. The advantage of using cohesive elements, instead of solid elements, is that very thin layers can be used without affecting the time increment.
- Laminates and Composite Materials