摘要
建立复合材料分层扩展数值模拟方法并掌握其特性对结构剩余强度预测具有重要意义,可为复合材料结构损伤容限设计与分析提供技术支撑。虚拟裂纹闭合技术、内聚力模型和扩展有限元方法是三种常见的分层数值模拟方法,但是针对这三种方法在复合材料层合板分层建模方面的特性仍缺乏深入的对比研究,这给数值方法的使用者带来极大困惑。本文以Ⅰ型分层为研究对象,采用三种方法分别建立了二维或三维有限元模型,对三种模拟方法进行全面的比较,并最终分析每种方法的优点和局限性。研究结果可为分层扩展数值模拟方法的运用提供理论支撑。
Establishing a numerical simulation method for delamination growth in composite materials and mastering its characteristics is of great significance for predicting the residual strength of composite structures,which can provide technical support for the design and analysis of damage tolerance in composite structures.Virtual crack closure technology,cohesive zone model,and extended finite element method are three common numerical methods.However,there is a lack of in-depth comparative research on the characteristics of these three methods in modeling the delamination of composite laminates,which greatly confuses the use of numerical methods.This paper takes mode I delamination as the research object,establishes two-dimensional and three-dimensional finite element models using three methods,comprehensively compares the three simulation methods,and finally analyzes the advantages and limitations of each method.The research results can provide theoretical support for the application of numerical methods for delamination simulation.
作者
龚愉
缪昌磊
单泽宇
唐伟
刘浩
张建宇
Gong Yu;Miao Changlei;Shan Zeyu;Tang Wei;Liu Hao;Zhang Jianyu(Chongqing University,Chongqing 400044,China)
出处
《航空科学技术》
2025年第6期23-32,共10页
Aeronautical Science & Technology
基金
航空科学基金(2022Z0570Q9002)。
关键词
复合材料
层板
分层
有限元
数值模拟
composite materials
laminates
delamination
finite element method
numerical simulation
