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复合固体推进剂细观力学模型研究
引用本文:史佩,李高春,李昊.复合固体推进剂细观力学模型研究[J].计算机仿真,2007,24(5):21-24,161.
作者姓名:史佩  李高春  李昊
作者单位:1. 海军航空工程学院训练部,山东,烟台,264001
2. 海军航空工程学院飞行器工程系,山东,烟台,264001
摘    要:为了建立复合固体推进剂的细观力学模型,首要的问题是建立一个能够真实描述推进剂细观形态结构的颗粒填充模型.文中将推进剂看作是颗粒与基体组成的复合材料,详细地给出了应用分子动力学生成推进剂颗粒填充模型的方法,得到了推进剂颗粒在基体中随机分布的颗粒填充模型.在此基础上,采用细观有限元方法进行了分析,获得了推进剂颗粒与基体内的应力分布情况.研究表明:分子动力学方法可以有效地生成推进剂的细观颗粒填充模型,在此基础上进行的细观力学分析可以有效地考虑固体推进剂细观结构对其力学性能的影响.

关 键 词:复合固体推进剂  分子动力学方法  细观形态  数值模拟  复合固体推进剂  细观力学模型  研究  Composite  Propellant  影响  力学性能  细观结构  细观力学分析  力学方法  分子动力  分布情况  应力  有限元方法  随机分布  基体  学生  应用  复合材料  体组成  填充模型
文章编号:1006-9348(2007)05-0021-04
修稿时间:2006-03-282006-04-10

Micromechanical Models for Composite Propellant
SHI Pei,LI Gao-chun,LI Hao.Micromechanical Models for Composite Propellant[J].Computer Simulation,2007,24(5):21-24,161.
Authors:SHI Pei  LI Gao-chun  LI Hao
Affiliation:1. Training Department of NAEI, Yantai Shandong 264001, China; 2. Department of Aircraft Engineering, NAEI, Yantai Shandong 264001 ,China
Abstract:In order to develop the micromechanical model of propellant,characteristics of the heterogeneous microstructure are very important.In this paper the random distribution packing models of filler in the binder of composite propellant were generated by regarding the propellant as a composite of filler and binder.The generation process is based on the Molecular Dynamics(MD) method.The generated packing models were then analyzed by finite element method and the stress distribution in different constituents of composite propellant was obtained.The results showed that the MD method can generate the microstructure of propellant effectively and the micromechanical analysis can consider the effect of microstructure on the mechanical properties of propellant.
Keywords:Composite propellant  Molecular dynamics method  Micromechanical morphology  Numerical simulation
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