Crashworthiness of.pngfened Plate Under Wedge Impact

doi:10.16183/j.cnki.jsjtu.2023.006

Abstract

Abstract:

In order to predict the crashworthiness of.pngfened plate structures of ships under eccentric vertical quasi-static ballast of wedge, a new simplified analytical method is proposed in this paper. The plastic deformation area of the rectangular plate is divided into eight asymmetrical plates and the aggregate is divided into two asymmetrical parts. An linear mode is adopted in the deformation of rectangular plate and aggregate. From the perspective of the internal dynamics of ship collision, and based on the rigid-plastic theory, a simplified analytical method is deduced between the deformation damage resistance and lateral deformation of rectangular plate and aggregate under the eccentric vertical action of wedge impact, considering tensile and bending effects of the membrane. The proposed method is verified by the simulation results of nonlinear finite element software Abaqus. The results show that the proposed method has a high prediction accuracy, and can be used in the hull structure design stage to quickly predict the crashworthiness of the ship side structure.

Key words: structural crashworthiness, wedge, .pngfened plates, simplified analytical method

CLC Number:

U661.43

CHEN Hongting, ZHAO Yanjie, ZHOU Hongyu, WANG Deyu. Crashworthiness of.pngfened Plate Under Wedge Impact[J]. Journal of Shanghai Jiao Tong University, 2024, 58(7): 1057-1066.

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工况	模型尺寸				撞击位置
工况	2l×2m/ (mm×mm)	2a/mm	2l_s×h_s/ (mm×mm)	t_s/mm	撞击位置
A1	600×400	80	—	—	1
A2	600×400	160	—	—	1
A3	600×400	240	—	—	1
AD2	600×400	160	—	—	2
B1	600×400	80	600×60	3	3
B2	600×400	160	600×60	3	3
B3	600×400	240	600×60	3	3
BD2	600×400	160	600×60	3	4
C1	600×400	160	600×40	3	3
C2	600×400	160	600×80	3	3
D1	600×400	160	600×60	2	3
D2	600×400	160	600×60	4	3

模型编号	结构失效时数据		解析计算变形抗力/kN	误差/%
模型编号	加载位移/mm	抵抗力/kN	解析计算变形抗力/kN	误差/%
A1	53.5	151.4	187.5	23.8
A2	66.1	234.8	274.6	17.0
A3	69.3	304.2	340.1	11.8
AD2	56.4	211.8	233.1	10.1
B1	61.9	227.1	275.3	21.2
B2	67.5	303.2	351.5	15.9
B3	73.6	403.5	449.9	11.5
BD2	58.8	276.8	317.8	14.8
C1	71.9	299.0	340.7	13.9
C2	67.0	326.1	386.2	18.4
D1	66.5	276.1	318.7	15.4
D2	69.8	359.9	380.8	5.8