Research progress of target resistance model of cavity expansion theory and its application

LIU Junwei; ZHANG Xianfeng; LIU Chuang; CHEN Haihua; XIONG Wei; TAN Mengting

doi:10.11883/bzycj-2021-0010

Volume 41 Issue 10

Oct. 2021

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Article Navigation > Explosion And Shock Waves > 2021 > 41(10): 101101

LIU Junwei, ZHANG Xianfeng, LIU Chuang, CHEN Haihua, XIONG Wei, TAN Mengting. Research progress of target resistance model of cavity expansion theory and its application[J]. Explosion And Shock Waves, 2021, 41(10): 101101. doi: 10.11883/bzycj-2021-0010

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LIU Junwei, ZHANG Xianfeng, LIU Chuang, CHEN Haihua, XIONG Wei, TAN Mengting. Research progress of target resistance model of cavity expansion theory and its application[J]. Explosion And Shock Waves, 2021, 41(10): 101101. doi: 10.11883/bzycj-2021-0010

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Research progress of target resistance model of cavity expansion theory and its application

doi: 10.11883/bzycj-2021-0010

Department of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

Received Date: 2021-01-06
Rev Recd Date: 2021-04-12

Available Online: 2021-09-06

Publish Date: 2021-10-13

Abstract

Abstract

The cavity expansion theory is one of the main basic theories for the theoretical analysis of penetration problems. It is mainly used to analyze the failure response characteristics of typical target materials under impact load, and then to determine the penetration resistance of the target. It is widely used in the analysis of high-speed impact penetration and failure problems. Domestic and foreign scholars have made abundant research achievements on plastic and (quasi) brittle materials based on the theory of cylindrical and spherical cavity expansion. Starting from the theoretical system of the static/dynamic cavity expansion model, the results of the cavity expansion model in different directions are introduced, mainly involving the cavity expansion pressure theoretical calculation model and numerical simulation method under ideal penetration conditions, and the application of cavity expansion model to typical penetration problems and complex missile target conditions. The theoretical calculation model under ideal penetration conditions based on cavity expansion theory mainly discusses the influence aspects of target material, yield criterion and equation of state on target resistance and the applicability of the cavity expansion model. According to the different initial conditions in the numerical simulation, two numerical simulation methods of cavity surface constant velocity/constant pressure are introduced, and the reliability of the numerical simulation method is proved. The basic assumptions, application scope and engineering application characteristics of the cavity expansion model are summarized, and its applications in typical penetration problems and complex missile targets such as multilayer composite target plate, constrained target, projectile grooves and projectile body with special cross-section are listed. Based on the current status of the cavity expansion model, we summarized the current cavity expansion model application direction in the field of impact dynamics, and the problems existing in the application of the cavity expansion model, as well as the key development direction in the cavity expansion model.
- penetration,
- cavity expansion theory,
- resistance model

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References(107)

References

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