Mechanism research of thin plate petaling under local loading based on multiaxial stress damage

Li Ying; Wu Weiguo; Zhang Lei; Du Zhipeng; Zhang Wei; Zhao Pengduo

doi:10.11883/1001-1455(2017)03-0554-06

Volume 37 Issue 3

Apr. 2017

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Li Ying, Wu Weiguo, Zhang Lei, Du Zhipeng, Zhang Wei, Zhao Pengduo. Mechanism research of thin plate petaling under local loading based on multiaxial stress damage[J]. Explosion And Shock Waves, 2017, 37(3): 554-559. doi: 10.11883/1001-1455(2017)03-0554-06

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Mechanism research of thin plate petaling under local loading based on multiaxial stress damage

doi: 10.11883/1001-1455(2017)03-0554-06

Li Ying^{1, 2},
Wu Weiguo¹,
Zhang Lei^{2
,
,},
Du Zhipeng²,
Zhang Wei²,
Zhao Pengduo²

1.
School of Transportation, Wuhan University of Technology, Wuhan 430063, Hubei, China
2.
Naval Academy of Armament, Beijing 100161, China

Received Date: 2015-09-17
Rev Recd Date: 2016-05-22
Publish Date: 2017-05-25

Abstract

Abstract

A failure criterion considering multiaxial stress state was proposed based on the thin plate damage testing. According to the evaluation of the stress state variation and damage level of the cracking and non-cracking areas, the following conclusions can be reached: (1) the petaling phenomenon of the thin plate used for naval ships can be forecasted effectively by the proposed failure criterion; (2) the petaling procedure can be divided into three distinct stages consisting of butterfly depressing, central area cracking, and petal processing; (3) the stress states of the cracking area and the non-cracking area are complicated, and the stress state's influence on the damage characteristics should be considered in predicting the petaling crevasse; (4) during the petaling, the central area will sink homogeneously, the cracking will result in large local deformation, and the petal cusps' curve will lead to a secondary damage to the petal roots.
- petaling,
- stress triaxiality,
- stress state,
- failure criterion

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References

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