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| 基于细观力学的复合固体推进剂模量预估方法 |
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李高春1, 邢耀国2, 王玉峰3, 庞爱民4,5, 郭翔4,6, 唐根4,7
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1.海军航空工程学院飞行器工程系 山东烟台264001;2.海军航空工程学院飞行器工程系 山东烟台264002;3.海军航空工程学院飞行器工程系 山东烟台264003;4.湖北红星化学研究所;5.湖北襄樊441003;6.湖北襄樊441004;7.湖北襄樊441005
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| 摘要: |
| 应用分子动力学方法得到了复合固体推进剂颗粒在基体内随机分布的填充模型。针对推进剂所含颗粒大小不同,采用细观力学有限元法和Mori-Tanaka分析法相结合的方法计算了推进剂的模量,计算所得模量与不同颗粒体积分数推进剂的单向拉伸试验结果比较吻合。此外,该方法可以获得推进剂细观结构应力,从而为推进剂的细观损伤分析奠定基础。 |
| 关键词: 复合推进剂 有限元法 Mori-Tanaka法+ 杨氏模量 |
| DOI： |
| 分类号:V512 |
| 基金项目: |
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| A micromechanical method of the effective modulus estimation for the composite propellant |
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LI Gao-chun,XING Yao-guo,WANG Yu-feng,PANG Ai-min,GUO Xiang,TANG Gen
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1.Department of Aircraft Engineering,Naval Aeronautical Engineering Academy,Yantai 264001,China;2.Department of Aircraft Engineering,Naval Aeronautical Engineering Academy,Yantai 264002,China;3.Department of Aircraft Engineering,Naval Aeronautical Engineering Academy,Yantai 264003,China;4.Hubei Red Star Chemical Inst.,Xiangfan 441003,China;5.Hubei Red Star Chemical Inst.,Xiangfan 441004,China;6.Hubei Red Star Chemical Inst.,Xiangfan 441005,China
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| Abstract: |
| The random distribution packing models of filler in the binder of composite solid propellant was generated based on the Molecular Dynamics(MD) method.By considering the different sizes of filler,the generated packing models were then analyzed by finite element method combined with the Mori-Tanaka method to evaluate the Young modulus of propellant.The numerical results agreed well with uniaxial tension experimental data on propellants with different volume fractions.Based on the new method,the stress field was determined,which provides the basis for micromechanical damage analysis. |
| Key words: Composite propellant Finite element method,Mori-Tanaka method+ Young modulus |
