Influences of thickness ratios of flange and skin of composite T-joints on the reinforcement effect of Z-pin

作者：Li, Mengjia; Chen, Puhui^*; Kong, Bin; Peng, Tao; Yao, Zhenglan; Qiu, Xueshi

来源：Composites Part B: Engineering , 2016, 97: 216-225.

DOI：10.1016/j.compositesb.2016.05.007

• 3-Dimensional reinforcement
• Delamination
• Finite element analysis (FEA)
• Mechanical testing

Experiments along with the finite element model were used to analyze the influences of thickness ratio of flange and skin (hereinafter referred to as thickness ratio) of T-joint on the reinforcing effect of Z-pin. Results showed that the thickness ratio significantly influences the reinforcement effect of Z-pin. Whether or not Z-pin should be applied to a specific T-joint can be decided by the thickness ratio. For T-joints with large thickness ratios (larger than 0.32 for the studied T-joint), the application of Z-pin is an effective way to increase the carrying capacities of the T-joints, while for T-joints with small thickness ratios (smaller than 0.32 for the studied T-joint), the reinforcing effect of Z-pin is not obvious. Besides, the corresponding load value under large displacement in the load-displacement curves of T-joints with different thickness ratios are similar.

• 出版日期2016-7-15
• 单位南京航空航天大学; 机械结构力学及控制国家重点实验室