江苏省科技期刊可视化阅读平台

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江苏科技信息 ›› 2016, Vol. 33 ›› Issue (15): 37-39.doi: 10.3969/j.issn.1004-7530.2016.15.023

• 论文 • 上一篇    下一篇

复合材料厚板单钉双剪挤压试验与数值模拟

朱智毅   

  1. 上海飞机设计研究院强度设计研究部,上海浦东,200120
  • 出版日期:2016-05-25 发布日期:2016-05-25

Bearing Strength Test and Numerical Simulation of Single-Bolt Double-Lap Joints in Thick Composite Laminates

Zhu Zhiyi   

  • Online:2016-05-25 Published:2016-05-25

摘要： 进行了复合材料厚板单钉双剪螺栓连接的挤压强度试验，并基于Hashin准则建立了三维有限元渐进损伤模型。通过编写和调用UMAT子程序，分析了基体开裂、挤裂和纤维断裂、挤压以及纤维基体剪切等破坏模式的生成和演变，同时探讨了螺栓弯曲变形对试件的连接刚度和挤压强度的影响。仿真与试验结果较为吻合，验证了模型的合理性和有效性。

关键词: 复材厚板连接, 单钉双剪, 有限元法, 损伤分析

Abstract: A bearing strength test of single-bolted double-lapped joints in thick composite laminates is conducted in this paper. We establish three-dimensional finite element models of progressive damage based on Hashin criteria. By compiling and calling UMAT subroutine, research on occurrence and expansion of matrix crushing, matrix cracking, fiber tensile failure, fiber compress failure and fiber-matrix shear failure is conducted. We also study the influences of bolt bending on connection stiffness and crush strength. And the tests verify the justifiability and effectiveness of the model.