机械制造与自动化2026，Vol.55Issue(4)：11-14,4.DOI:10.19344/j.cnki.issn1671-5276.2026.04.002
基于晶体塑性与内聚力准则耦合的含孔铝合金断裂行为研究
Research on Fracture Behavior of Porous Aluminum Alloy Based on Coupled Crystal Plasticity and Cohesive Zone Model
摘要
Abstract
Due to limitations in manufacturing and processing techniques,defects such as microvoids are inevitably present in metal materials and can significantly affect their mechanical behavior.In this paper,based on crystal plasticity theory and the cohesive zone model,the influence of microvoids on the fracture performance of aluminum alloy plates with single-edge cracks is investigated experimentally.Uniaxial tensile tests on standard aluminum alloy specimens are conducted to determine the key parameters required for the crystal plasticity simulation and the cohesive zone model.A crystal plasticity finite element model of the aluminum alloy plate containing holes is established based on the microscopic morphology of the fracture surface.Finally,The effects of the distribution range and size of holes on the propagation path of the prefabricated crack are explored,revealing the mechanism by which micro-holes influence the tensile fracture behavior of the aluminum alloy.This study contributes to the understanding of the damage behavior of metal plates under the coupled action of cracks and holes.关键词
晶体塑性有限元/内聚力模型/断裂行为/微孔洞/裂纹Key words
crystal plasticity finite element/cohesive zone model/fracture behavior/microvoids/crack分类
信息技术与安全科学引用本文复制引用
陶玉杰,董淑宏..基于晶体塑性与内聚力准则耦合的含孔铝合金断裂行为研究[J].机械制造与自动化,2026,55(4):11-14,4.基金项目
航空航天结构力学及控制国家重点实验室开放课题(MCMS-E-0123Y03) （MCMS-E-0123Y03）
