Application of modified SPH method to numerical simulation of ceramic spallation

Zhang Jie; Su Shao-qing; Zheng Yu; Wang Xiao-jun

doi:10.11883/1001-1455(2013)04-0401-07

Volume 33 Issue 4

Mar. 2014

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LiuQuan, WangRui-li, LinZhong, WenWan-zh. UncertaintyquantificationforJWLEOSparametersinexplosivenumericalsimulation[J]. Explosion And Shock Waves, 2013, 33(6): 647-654. doi: 10.11883/1001-1455(2013)06-0647-08

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Zhang Jie, Su Shao-qing, Zheng Yu, Wang Xiao-jun. Application of modified SPH method to numerical simulation of ceramic spallation[J]. Explosion And Shock Waves, 2013, 33(4): 401-407. doi: 10.11883/1001-1455(2013)04-0401-07

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Application of modified SPH method to numerical simulation of ceramic spallation

doi: 10.11883/1001-1455(2013)04-0401-07

1.
(1.Department of Modern Mechanics, University of Science and Technology of China, Hefei230027, Anhui, China;2.School of Civil Engineering, Anhui University of Architecture, Hefei230022, Anhui, China;3.Ministerial Key Laboratory of ZNDY, Nanjing University of Science and Technology, Nanjing210094, Jiangsu, China)

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Supported by the National Natural Science Foundation of China (11102205) 

Publish Date: 2013-07-25

Abstract

Abstract

 To explore the spallation in ceramic impacted by an aluminum flyer, the modified SPH method was used to simulate the stress wave propagation in ceramic. The results show that the simulated free-surface velocity histories are in agreement with the experimental ones when the discrete particles are distributed non-uniformly. The precision of the results by the modified SPH method is higher than that by CSPM. And a damage evolution equation for ceramic was proposed to numerically simulate the spallation process of laminated ceramic-steel armor plates under pulse loading. The results display that the wave impedance in ceramic is much higher than that in steel and the spallation induced by tension stress is primary. Even though an elastic compression wave propagates in ceramic, the unloading wave reflected by the ceramic-steel interface can also lead to ceramic spallation.
- solid mechanics,
- spallation,
- modified SPH,
- damage evolution,
- ceramic

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