航空学报2025，Vol.46Issue(21)：41-59,19.DOI:10.7527/S1000-6893.2025.32330
内聚力模型在飞机金属薄壁结构断裂模拟中的应用进展
Progress in application of cohesive zone model in fracture simulation of aircraft metallic thin-walled structures
摘要
Abstract
The Cohesive Zone Model(CZM)demonstrates significant value in the residual strength assessment of air-craft metallic thin-walled structures because of its straightforward parameter setting,high numerical stability,and ability to effectively simulate complex crack propagation behavior.This paper focuses on its Traction-Separation Law(TSL),sys-tematically reviewing the geometric characteristics of typical TSL curves,initial stiffness,and the physical significance of key parameters.It also compares and analyses the applicability and differences among various TSL forms in simulating ductile fracture of metals.Building on this,this paper summarizes experimental measurement methods and numerical in-version techniques for cohesive parameters,and explores the influence of parameter selection on the accuracy of finite element simulations.Furthermore,regarding the numerical implementation of CZM,this paper categorizes and explains three modelling strategies:two-dimensional cohesive elements,shell elements,and three-dimensional cohesive ele-ments,comparing their respective advantages and disadvantages.Through typical engineering case studies,the feasi-bility and applicability of CZM in simulating fracture in metallic thin-walled structures are validated.Looking ahead,to fur-ther enhance the application level of the cohesive zone model in metallic thin-walled structures,two critical scientific prob-lems urgently need to be addressed:the quantitative relationship between cohesive parameters under different TSL shapes,and the correlation mechanism between TSL parameters and microscopic damage mechanisms.关键词
内聚力模型/牵引分离定律/金属薄壁结构/韧性断裂/飞机结构Key words
cohesive zone model/traction-separation law/metallic thin-walled structure/ductile fracture/aircraft structure分类
航空航天引用本文复制引用
郭润杰,鲁龙坤,周子康,王生楠..内聚力模型在飞机金属薄壁结构断裂模拟中的应用进展[J].航空学报,2025,46(21):41-59,19.基金项目
国家自然科学基金(12372083,12002182) （12372083,12002182）
中央高校基本科研业务费专项资金(G2023KY05104) National Natural Science Foundation of China(12372083,12002182) （G2023KY05104）
The Fundamental Research Funds for the Central Universities(G2023KY05104) （G2023KY05104）
