温度载荷下装药内外径比和长径比对结构完整性影响的规律研究

于洋; 王宁飞; 张平

温度载荷下装药内外径比和长径比对结构完整性影响的规律研究

于洋^1,2,
王宁飞²,
张平²

1.
大连海事大学机电与材料工程学院, 大连 116026
2.
北京理工大学宇航科学技术学院, 北京 100081

基金项目: 国防基础科研项目(K1305060614)

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出版历程
- 收稿日期: 2006-09-04
- 修回日期: 2007-01-04
- 刊出日期: 2007-09-28

Research on influence of diameter ratio and length-diameter ratio on structural integrity of solid propellant under temperature loading

1.
Electromechanics and Material College, Dalian Maritime University, Dalian 116026, China
2.
School of Aeronautics Science and Technology, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 在固体火箭发动机装药设计中通常将药柱的外径与内径之比定义为m数(m=R/r)为研究装药设计参数m数和药柱长径比在温度载荷下对装药结构完整性的影响, 采用基于Total Lagrangian方法的热粘弹性大变形增量本构关系, 通过选取9种m数以及8种药柱长径比, 共72个计算模型, 对装药结构完整性进行了计算, 结果表明温度载荷下药柱最大Von Mises等效应力、应变值受药柱m数以及长径比共同影响.并得出当长径比大于3时, 药柱最大等效应力、应变值主要取决于m数的结论.
- 航空、航天推进系统 /
- 固体火箭发动机 /
- 结构完整性 /
- 内外径比 /
- 长径比 /
- 热粘弹性 /
- 大变形 /
- 增量本构关系
Abstract: To investigate the influence of number m and length-diameter ratio on structural integrity of solid propellant under temperature loading,the thermoviscoelastic large deformation incremental constitutive equation was derived from Total Lagrangian method.Nine different numbers m and eight length-diameter ratios for calculation 72 models were selected to measure the effects on the structural integrity.The results show that,number m and length-diameter ratio have cooperative effects on the maximum value of equivalent Von Mises stress and strain.If the length-diameter ratio is larger than 3,it's concluded that the maximum value of equivalent Von Mises stress and strain are mainly determined by number m of solid propellant.
- aerospace propulsion system /
- solid rocket motor /
- structural integrity /
- diameter ratio /
- length-diameter ratio /
- thermoviscoelasticity /
- large deformation /
- incremental constitutive equation

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参考文献(6)

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