Prediction Method of the Dent Depth of Composite Laminates Subjected to Quasi-static Indentation

摘要：

A method was developed to predict numerically the dent depth of composite laminates subjected to quasistatic indentation. A progressive damage analysis was conducted for composite laminates under quasi-static transverse compressive loading by using a strain based Hashin and Yeh failure criteria as well as the FEM, and a series of degraded elastic constants of the damaged zone were drawn from the numerical results. The effective elastic constants of the damaged zone of the laminates were reevaluated according to Suns explicit expression. Finally, the dent depth vs. indentation force curve was predicted based on Swansons contact theory. The numerical simulations on the static indentation tests of T700/BA9912, T700S/5228 and T700/QY9511 laminates were done via this method. The numerical results agree well with the test data in the terms of the contact force and the corresponding dent depth.

关键词： Indentation Damage resistance Contact force Dent depth Progressive failure analysis

作者: Qiang Ye Puhui Chen Zhen Shen

作者单位: School of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing,210016, Aircraft Strength Research Institute of China, Xian, 710065, China

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 1483-1486

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）