From test data to FE code: a straightforward strategy formodelling the structural bonding interface

Frattura ed Integrità Strutturale

M. Perrella¹  M. A. Lepore¹ 

[1] Department of Industrial Engineering, University of Salerno, via Giovanni Paolo II, 132 - 84084 - Fisciano (SA), Italy;

关键词: Finite element method;    Mode I crack;    Fracture toughness;    Cohesive law;   

DOI  :  10.3221/IGF-ESIS.39.19

来源: DOAJ

【 摘 要 】

A straightforward methodology for modelling the cohesive zone (CZM) of an adhesively bonded joint is developed, by using a commercial finite element code and experimental outcomes from standard fracture tests, without defining a damage law explicitly. The in-house developed algorithm implements a linear interpolated cohesive relationship, obtained from literature data, and calculates the damage at each step increment. The algorithm is applicable both to dominant mode I or dominant mode II debonding simulations. The hypothesis of unloading stages occurrence is also considered employing an irreversible behaviour with elastic damaged reloading. A case study for validation is presented, implementing the algorithm in the commercial finite element method (FEM) software Abaqus®. Numerical simulation of dominant mode I fracture loading provides with satisfactory results.

【 授权许可】

Unknown