Analysis of accumulative plasticity of hull plate with an inclined crack under biaxial non-proportional low-cycle fatigue loading

被引：0

作者：

Deng J.-L. ^{[1
]}

Tu W.-L. ^{[1
]}

Xu Y. ^{[2
]}

Dong D.-W. ^{[1
]}

Qiu S.-L. ^{[1
]}

Lu R.-T. ^{[1
]}

机构：

[1] School of Mechanical and Marine Engineering, Beibu Gulf University, Qinzhou

[2] Guangzhou Plan Approval Center of China Classification Society, Guangzhou

来源：

Chuan Bo Li Xue/Journal of Ship Mechanics | 2023年 / 27卷 / 01期

关键词：

Accumulative plastic deformation; Biaxial low-cycle fatigue; Fatigue life; Hull cracked plate; Non-proportional loading;

D O I：

10.3969/j.issn.1007-7294.2023.01.009

中图分类号：

学科分类号：

摘要：

Under the action of multiaxial high stress and low-cyclic alternating load in bad sea conditions, a hull structure has both multiaxial low-cycle fatigue failure and obvious accumulative plastic failure. In this study, a series of experiments were conducted to study the accumulative plastic damage behavior of hull inclined cracked plates made of Q235 steel under biaxial non-proportional low cycle fatigue load, and a prediction model for biaxial non-proportional low-cycle fatigue life of inclined cracked hull plates based on accumulative plasticity under biaxial non-proportional low cycle fatigue load was proposed. By analyzing the stress-strain hysteresis loops of the cruciform specimens with the inclined crack under different biaxial nonproportional low-cycle fatigue loads, the effects of different biaxial ratios, stress ratios and phase differences on the accumulative plastic deformation were emphatically studied. This study provides an important basis for accurate assessment of the effects of accumulative plastic deformation on the fatigue life of hull plates under non-proportional biaxial low-cycle fatigue. © 2023, Editorial Board of Journal of Ship Mechanics. All right reserved.

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页码：97 / 108

页数：11

共 26 条

[1] Tian Zhaozhe, Yang Ping, Hu Kang, Et al., Research on the bearing capacity of cracked stiffened panel under cyclic compressive load based on accumulative plastic failure, Journal of Wuhan University of Technology (Transportation Science and Engineering), 44, 5, pp. 875-880, (2020)
[2] Huang Zhenqiu, Several problems in ship strength research, Wuhan Shipbuilding, 3, pp. 3-7, (1999)
[3] Huang Zhenqiu, A new view on the criterion of total hull strength of seagoing ships, Wuhan Shipbuilding (Journal of WuHan Society of Naval Architects), 6, pp. 8-12, (1993)
[4] Paik J K, Kumar Y, Lee J M., Ultimate strength of cracked plate elements under axial compression or tension, Thin-Walled Structures, 43, 2, pp. 237-272, (2005)
[5] Chen Gang, Liu Yinghua, Structural plastic limit and stability analysis theory and engineering methods, (2006)
[6] Huang Zhenqiu, Ultimate strength of rectangular plate under cyclic compression-tension load, Journal of Huazhong University of Science and Technology, 22, 4, pp. 36-41, (1994)
[7] Huang Zhenqiu, Chen Qishu, Luo Ziye, Et al., Inelastic deformation behavior of plate under cyclic in-plane compression load, Journal of Huazhong University of Science and Technology, 24, 3, pp. 39-42, (1996)
[8] Li Huicheng, Study on ultimate strength of ship hull based on incremental plasticity method, (2009)
[9] Dong Q, Yang P, Xu G, Jiang W., Experimental study on interaction of low cycle fatigue and accumulative plastic damage of AH32 steel in uniaxial cyclic loading, Journal of Ship Mechanics, 22, 6, pp. 771-782, (2018)
[10] Coffin L F., The deformation and fracture of ductile metal under superimposed cyclic and monotonic strain, ASTM International, American Society for Testing and Materials, pp. 53-76, (1970)

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