Research on load-carrying properties and damage mechanism of composite L-joint

被引：0
作者：
Qiu J. [1 ]
Li H. [2 ]
机构：
[1] Department of Salvage and Rescue, PLA Naval Submarine Academy, Qingdao
[2] College of Ship and Ocean Engineering, Naval University of Engineering, Wuhan
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2022年 / 50卷 / 02期
关键词：
Bending; Damage mechanism; L-joint; Load-carrying properties; Sandwich composite;
D O I：
10.13245/j.hust.220211
中图分类号：
学科分类号：
摘要：
The bending load-carrying properties and damage mechanism of sandwich composite L-join was researched by experiment and numerical calculation. Firstly, the bending experiment of L-joint specimens with three different dimensions was carried out, and then the effect of the radius and skin thickness of the transition region to the load-carrying properties as well as the damage characteristics was analyzed. Secondly, the core's compressed experiment was carried out in order to obtain the plastic parameters of the core, and then numerical simulation model of the core compress was presented. Finally, the quasi-static simulation model of L-joint under the test conditions was presented, the simulated results were compared to the test results, and then the damage mechanism and the variation of the radius and skin thickness of the transition region to the load-carrying properties were analyzed. It can be seen that sandwich composite L-joint damage is mainly manifested as the core plastic deformation, and enlarging the radius and skin thickness of the transition region can increase the load-carrying capacity, and then the simulated results agreeing well to the test results verifies the rationality of the numerical model. © 2022, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.
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页码：63 / 68
页数：5
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