一种复合材料层合板分层扩展的修正内聚力模型  

A CORRECTED COHESIVE ZONE MODEL IN THE INTERLAMINAR FRACTURE OF COMPOSITE

作　　者：贾云龙 徐琳[2] 项斌 JIA YunLong;XU Lin;XIANG Bin(Leobit Technology Co.,Ltd.,Wuhan 430040,China;Key Laboratory of High Performance Ship Technology of Ministry of Education,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]航天行云科技有限公司,武汉430040 [2]武汉理工大学高性能船舶技术教育部重点实验室,武汉430063

出　　处：《机械强度》2021年第5期1262-1266,共5页Journal of Mechanical Strength

摘　　要：针对复合材料的分层现象,考虑初始断裂韧性和裂尖材料损伤的影响,提出了一种修正内聚力模型,并给出了内聚力模型参数确定的方法。根据相关试验,采用该方法,获得了考虑初始断裂韧性和裂尖材料损伤的内聚力模型,基于该内聚力模型对试验进行了仿真分析。结果表明,与仅考虑初始断裂韧性获取的内聚力模型相比,考虑初始断裂韧性和裂尖材料损伤的内聚力模型,可以更加准确地模拟复合材料的分层现象。In order to consider both material damage of the crack tip and the initial fracture toughness,a corrected cohesive zone model(CZM)that considers the influence of material damage of the initial crack propagation has been proposed.The corrected cohesive zone mode obtained from the end notch flexure(ENF)test has been implemented in the ABAQUS/Standard.The results show that it is necessary to consider both material damage of the crack tip and the initial fracture toughness,and the corrected cohesive zone mode can accurately simulate the crack propagation.

关 键 词：复合材料 内聚力模型 裂纹扩展 数值仿真 

分 类 号：TB332[一般工业技术—材料科学与工程]