摘要
通过ABAQUS软件建立三维累积损伤有限元模型,计算复合材料层板单钉沉头螺栓连接结构的条件挤压载荷,并对其损伤机理与破坏过程进行分析;选用适合该类结构层板的损伤判据与衰减准则进行验证。计算获得的初始挤压破坏载荷与实验结果吻合良好,说明所建模型的有效性。在此基础上,分析了接触面摩擦、螺栓刚度和连接金属板刚度等因素对连接结构拉伸性能的影响。结果表明:接触面摩擦因数和螺栓刚度对结构拉伸性能的影响较为明显,金属板刚度的影响很小。
A 3D finite element progressive damage model was established with ABAQUS software. The offset bearing failure load of the single countersunk bolt composite laminate joint was calculated, and the damage mechanism and failure course were analyzed. Laminate damage criteria and stiffness atten- uation rules for this type of structure were applied and verified. The numerical results indicate good agreement with the test results, which prove validity of this model. The influence of the contact surface friction, bolt stiffness and stiffness of the connecting metal plate on the joint tensile property is studied. The results show that the contact surface friction factor and bolt stiffness have a great effect on the joint tensile performance, but the effect of the metal plate stiffness can be ignored almost.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2013年第12期8-12,共5页
Journal of Materials Engineering
关键词
复合材料层板
单钉沉头螺栓连接
拉伸性能
损伤
composite laminate
single countersunk bolt joint
tensile property
damage
