复合材料层合板端部压溃试验研究

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摘要本文通过对T800复合材料层合板进行一系列的端部压溃试验，重点研究了长度、厚度、铺层顺序、触发角以及胶结压力等因素对复合材料层合板破坏模式和力学性能的影响。通过分析复合材料板在端部压溃过程中的载荷-位移曲线和观察试验样件端部破坏形貌，揭示其破坏机理。结果表明：复合材料平板的端部压溃过程为非稳态脆性断裂模式，而含45°触发角的复合材料层合板的端部压溃过程为层束弯曲破坏模式；在端部压溃试验中复合材料平板压缩强度随着厚度的增加逐渐上升，而长度的增加会减少其压缩强度，同时[45/90/-45/0]3s铺层比[45/0/-45/0]3s铺层拥有更好的抗轴向承载能力；触发角的加入会改变试件在压溃过程中的破坏模式并极大降低试件压溃时的压缩强度，是影响复合材料结构吸能能力的关键因素；最后，研究还发现不同胶结压力下，复合材料层板的力学性能随着胶结压力的增加逐渐提高，但达到一定胶结压力值后，继续增加胶结压力力学性能反而下降。
关键词：复合材料层合板；宏观破坏模式；端部压溃；触发角；胶结压力

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	黄成航1
	沈宇平1
	李向前2
	王永刚1
	潘殿坤1
	伍章明1

关键词 ：复合材料层合板, 宏观破坏模式, 端部压溃, 触发角, 胶结压力

Abstract：In this research, a series of end crush experiments was carried out on T800 composite laminates. The effects of different lengths, thicknesses, stacking sequences, trigger angles and cementation pressures on the compressive properties of composite materials were studied. The failure mechanism was revealed by analyzing the load-displacement curve of the composite laminates in the process of end crush and observing the end failure morphology of the test sample. The results show that the end crushing process of composite laminates is unstable brittle fracture mode, while the end crushing process of composite laminates with 45° trigger angle is beam bending failure mode; In the end crushing test, the compressive strength of composite laminates increases with the increase of thickness, while the increase of length decreases the compressive strength. At the same time, [45/90/-45/0]3s laminates has better axial bearing capacity than [45/0/-45/0]3s laminates; The addition of trigger angle will change the failure mode and greatly reduce the compressive strength of the specimen during crushing, which is the key factor affecting the energy absorption capacity of composite structure; Finally, it is found that the mechanical properties of composite laminates under different cementation pressures increase gradually with cementation pressures, but the mechanical properties decrease when the cementation pressures increase to a certain value.
Keywords: Composite laminates; Macroscopic failure mode; End crushing; Trigger angle; Cementation pressure

Key words： Composite laminates Macroscopic failure mode End crushing Trigger angle Cementation pressure

收稿日期: 2021-08-09 出版日期: 2022-10-15

引用本文:

黄成航1，沈宇平1，李向前2，王永刚1，潘殿坤1，伍章明1. 复合材料层合板端部压溃试验研究[J]. 振动与冲击, 2022, 41(19): 216-222.
HUANG Chenghang1, SHEN Yuping1, LI Xiangqian2, WANG Yonggang1, PAN Diankun1, WU Zhangming1. End crushing tests of composite laminates. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(19): 216-222.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I19/216

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