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弹丸侵彻混凝土的SPH算法
引用本文:宋顺成,才鸿年.弹丸侵彻混凝土的SPH算法[J].爆炸与冲击,2003,23(1):56-60.
作者姓名:宋顺成  才鸿年
作者单位:1. 西南交通大学,四川,成都,610031
2. 中国南方工业集团公司,北京,100081
摘    要:给出了弹丸侵彻混凝土的数值计算,其中弹体作为刚体处理并划分成Lagrangian标准有限元网格,而混凝土划分成光滑粒子并经历大应变、高应变率和高压作用。为了描述混凝土的非线性变形及断裂特性,在计算中引入了Holmquist Johnson Cook本构模型及损伤模型。计算结果与实验结果的对比表明,利用光滑粒子流体动力学方法对混凝土材料进行大应变、高应变率的变形计算是有效的,并可避免网格重分或网格消蚀。此外,将光滑粒子流体动力学方法和有限元方法结合可以保持计算过程中材料界面的清晰。

关 键 词:固体力学  侵彻  混凝土  SPH算法
文章编号:1001-1455(2003)01-0056-05
修稿时间:2001年12月18日

SPH algorithm for projectile penetrating into concrete
SONG Shun cheng ,C AI Hong nian STBZ.SPH algorithm for projectile penetrating into concrete[J].Explosion and Shock Waves,2003,23(1):56-60.
Authors:SONG Shun cheng  C AI Hong nian [STBZ]
Institution:SONG Shun cheng 1,C AI Hong nian 2 [ST5BZ]
Abstract:This paper presents computat io n of simulative projectile penetrating into concrete, where projectiles were tre ated using standard Lagrangian finite elements and considered as rigid but concr ete targets were divided into Smooth Particle Hydrodynamic(SPH) grids and subje cted to large strains, high strain rates, and high pressures. To describe nonlin ear deformation and fracture characteristics of concrete, Holmquist Johnson C ook constitutive relations and damage model were incorporated into computations. The comparison of the calculative results with experiments shows that the SPH a lgorithm for projectile penetrating into concrete subjected large strain is vali d and that the mesh rezoning or mesh eroding become unnecessary for handling sev erely distorted zones by using this algorithm. It is obvious that projectile co ncrete interface could be kept clearness by incorporation of the finite element method into SPH algorithm. WT5HZ]
Keywords:WT5BZ]: solid mechanics  pe netration  concrete  SPH algorithm
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