陶瓷/金属复合装甲冲击响应的三维SPH 法分析

张伟; 胡德安; 韩旭; 谭柱华

doi:10.11883/1001-1455(2011)04-0373-07

陶瓷/金属复合装甲冲击响应的三维SPH 法分析

doi: 10.11883/1001-1455(2011)04-0373-07

1.
湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082

基金项目:

国家自然科学基金项目(10902038)

国防基础科学研究计划项目(A1420080166)

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出版历程
- 刊出日期: 2011-07-25

Three-dimensionalSPHanalysisofimpactresponses ofceramic/metalcompositearmors

1.
StateKeyLaboratoryofAdvancedDesignand ManufacturingforVehicleBody,

Funds:

NationalNaturalScienceFoundationofChina(10902038)

NationalDefenseBasicScientificResearchProgram (A1420080166)

More Information

Corresponding author: HAN Xu

摘要

摘要: 采用自编三维SPH 程序对弹体侵彻陶瓷/金属复合装甲问题进行了数值模拟。为了描述金属和陶瓷材料非线性变形及损伤特性,在程序中嵌入Johnson-Cook和Johnson-HolmquistII本构模型及Mie- Gruneisen状态方程。SPH 计算得到的典型位移随时间变化曲线与实验结果吻合较好。通过数值模拟合理再现了弹体侵蚀、陶瓷锥形成、飞溅和背板隆起撕裂等物理过程。研究了倾角对复合装甲抗侵彻性能的影响, 结果表明,存在一个最优的靶板倾角,使得陶瓷/金属复合装甲的抗侵彻性能最佳。
- 爆炸力学 /
- 侵彻 /
- 三维SPH 程序 /
- 陶瓷/金属复合装甲
Abstract: Athree-dimensionalsmoothedparticlehydrodynamics(SPH)codewasdevelopedtosimulatethepenetrationofceramic/ metalcompositearmorsbyprojectiles.TheJohnson-CookandJohnson- HolmquistIIconstitutivemodelsandtheMie-Grneisenequationofstatewereincorporatedinto thedevelopedcodetodescribethenonlineardeformationanddamagefeaturesofmetalandceramic materials.Thetypicaldisplacement-timecurvescomputedbythedevelopedSPHcodeareingoodagreementwiththeexperimentalresults. Thenumericalsimulationscanrepresentthemajorfeatures ofthecompositearmorsystem suchas,projectileerosion,ceramicconoidformationandsplash, backingplatefailureandsoon.Andtheobliquityeffectsonthepenetration-resistanceabilityofthe compositearmorwereinvestigated.Theresultsindicatethatthereexistsanoptimalobliquityforthe penetration-resistanceability.
- mechanicsofexplosion /
- penetration /
- three-dimensionalSPH method /
- ceramic/metal compositearmor