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原文传递 Cohesive Laws and Progressive Damage Analysis of Composite Bonded Joints, a Combined Numerical/Experimental Approach.

题名：	Cohesive Laws and Progressive Damage Analysis of Composite Bonded Joints, a Combined Numerical/Experimental Approach.
作者：	Girolamo, D.; Davila, C. G.; Leone, F. A.; Lin, S.
关键词：	Bonded joints, Adhesives, Cohesion, Continuum mechanics, Damage assessment, Finite element method, Mathematical models, Fracturing, Failure
摘要：	The results of an experimental/numerical campaign aimed to develop progressive damage analysis (PDA) tools for predicting the strength of a composite bonded joint under tensile loads are presented. The PDA is based on continuum damage mechanics (CDM) to account for intralaminar damage, and cohesive laws to account for interlaminar and adhesive damage. The adhesive response is characterized using standard fracture specimens and digital image correlation (DIC). The displacement fields measured by DIC are used to calculate the J-integrals, from which the associated cohesive laws of the structural adhesive can be derived. A finite element model of a sandwich conventional splice joint (CSJ) under tensile loads was developed. The simulations, in agreement with experimental tests, indicate that the model is capable of predicting the interactions of damage modes that lead to the failure of the joint.
总页数：	Girolamo, D.; Davila, C. G.; Leone, F. A.; Lin, S.
报告类型：	科技报告