弯曲载荷作用下复合材料T型接头的失效分析  

Failure analysis of composite T-joints under bending load

作　　者：吴海[1] 肖加余[1] 邢素丽[1] 文思维[1] 杨孚标[1] 杨金水[1] 

机构地区：[1]国防科技大学航天科学与工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2016年第1期56-62,共7页Journal of National University of Defense Technology

基　　金：湖南省重大科技专项资助项目(2011FJ1001)

摘　　要：运用蔡-吴逐步失效判据和黏聚接触模型建立弯曲加载下的T型接头的有限元模型。对复合材料T型接头在弯曲加载下的损伤机理和承载能力进行数值模拟。结合静态弯曲加载实验,揭示T型接头在弯曲破坏过程中的四种失效模式。T型接头的弯曲失效载荷的有限元模型计算结果与实测值吻合较好。A finite element model of the composite T-joints under bending load was established. The Tsai-Wu failure criterion and a cohesive zone model were used to simulate and analyze the failure mechanisms and carrying capacities of the composite T-joints under bending load. By static bending experiments,four failure modes have been investigated during bending failure processes of the composite T-joints. The maximum bending load of the T-joint calculated by finite element model methods was consistent well with experimental results.

关 键 词：T型接头 蔡-吴逐步失效判据 黏聚接触模型 失效模式 弯曲失效 

分 类 号：TB332[一般工业技术—材料科学与工程]