复合材料科学与工程Issue(6)：34-40,7.DOI:10.19936/j.cnki.2096-8000.20250628.005
纤维增强树脂基复合材料结构极限强度预测方法
Prediction method for ultimate strength of fiber-reinforced resin matrix composite structures
摘要
Abstract
A convenient and practical method for predicting the ultimate strength of structures was developed for accelerating the progress of structural design scheme demonstration in the early stage of projects.Firstly,an analyti-cal expression for the equivalent modulus of laminate was derived based on the laminate theory.Secondly,according to the assumption that the failure occurred layer by layer and stiffness degradation,the first layer failure strength and ultimate strength of laminate are obtained by numerical algorithm.Then,by comparing the predicted values and the tested values of equivalent mechanical parameters of laminate,it was found that the predicted values of equivalent modulus are completely consistent with the tested values,the predicted values of ultimate tensile strength are also completely consistent with the tested values,only the predicted values of ultimate compressive strength were 10％lower than the tested values.Finally,the ultimate strength of typical end frame flange structures was predicted by the traditional structural finite element method,based on equivalent mechanical properties of laminate.Through comparison with test,it was found that the predicted ultimate load was 15％lower than the experimental failure load.The method has a fast calculation speed and enough precision for structural design scheme demonstration in the early stage of projects.关键词
纤维增强树脂基复合材料/层合板/等效模量/等效强度/极限强度/最大应力准则Key words
fiber reinforced resin matrix composite/laminate/equivalent modulus/equivalent strength/ulti-mate strength/maximum stress criterion分类
通用工业技术引用本文复制引用
程显贺,程宏川,邹志伟,刘佳鑫,李玉龙,林再文..纤维增强树脂基复合材料结构极限强度预测方法[J].复合材料科学与工程,2025,(6):34-40,7.基金项目
吉林省科技发展计划项目(20210201120GX) （20210201120GX）
