Simulation of debonding in Al/epoxy T-peel joints using a potential-based cohesive zone model
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
Composite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
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AbstractIn this work, a cohesive zone model of fracture is employed to study debonding in plastically deforming Al/epoxy T-peel joints. In order to model the adhesion between the bonded metal strips, the Park-Paulino-Roesler (PPR) potential based cohesive model (J Mech Phys Solids, 2009;57:891-908) is employed, and interface elements are implemented in a finite element com-mercial code. A study on the influence of the cohesive properties (i.e. cohesive strength, fracture energy, shape parameter and slope indicator) on the predicted peel-force versus displacement plots reveals that the numerical results are mostly sensitive to cohesive strength and fracture energy. In turn, these parameters are tuned until a match between experimental and simulated load displacement curves is achieved.
CitationSimulation of debonding in Al/epoxy T-peel joints using a potential-based cohesive zone model 2011, 10:1760 Procedia Engineering
Conference/Event name11th International Conference on the Mechanical Behavior of Materials, ICM11