INVERSION OF PARAMETERS FOR COMPOSITE INTERLAYER COHESIVE ZONE MODEL BY USING ARTIFICIAL BEE COLONY ALGORITHM

Abstract

Cohesive zone model（ CZM） is widely in used integrity evaluation for composites with delamination damage,and accurately obtaining the CZM parameters has important effects on the evaluation results. In this paper,the inversion of CZM parameters is studied,and double-cantilever beam（ DCB） tests are carried out to obtain the load-displacement data at the loading point. Combined with the outputs of the corresponding forward finite element（ FE） model,an objective function is constructed and artificial bee colony（ ABC） algorithm is employed to optimally identify the CZM parameters. Numerical and experimental results have demonstrated that,ABC algorithm has better convergence and optimization ability than genetic（ GA） algorithm and particle swarm optimization（ PSO） algorithm; it has certain anti-noise capability that can optimally obtain the CZM parameters under different levels of measurement noise,and the simulated load-displacement data with the inversely identified parameters match the actual test ones well.

Keywords

• Cohesive zone model;Parameter inversion;Artificial bee colony algorithm;Double-cantilever beam tests;Finite element simulation