摘要
在位移载荷作用下,基于二维有限元模型,通过编写材料失效准则和刚度退化规则的ABAQUS用户子程序USFLD,并考虑剪切非线性效应,分析了一般铺层下配合间隙、挤压面切向摩擦系数和开孔形状对复合材料层合板单钉螺栓连接力学性能的影响。结果表明:小的配合间隙、大的挤压面切向摩擦系数和开孔形状采用圆孔时均有利于提高连接强度。
Based on the two-dimensional FE model,the inference factors,such as the clearance between bolt and the hole,tangential friction coefficient of bearing surface and hole shape,on the mechanical properties of single-bolted composite laminates with general plies were analyzed under the displacement load.It was realized by implementing the material failure criterion and stiffness degradation rules into the user material program USFLD in ABAQUS software,in which the non-linear shear effect was taken into account.The results show that bearing strength will be increased with decreasing clearance,with increasing tangential friction coefficient or when the round bolted hole is selected compared with elliptical hole 1 and elliptical hole 2.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2010年第1期58-61,共4页
Journal of Materials Science and Engineering
基金
国防科技工业技术基础科研资助项目(Z142006B001)
国家高科技研究发展专项(863计划)经费资助项目(2007AA04Z404)
关键词
复合材料层合板
螺栓连接
配合间隙
摩擦系数
开孔形状
损伤
composite laminate
bolted joint
clearance between bolt and the hole
friction coefficient
hole shape
failure
