航天推进技术研究院主办
[1]石 波,黄雪刚,周 杰,等.动态载荷下的喷管运动结构拓扑优化设计探讨[J].火箭推进,2021,47(05):42-48.
SHI Bo,HUANG Xuegang,ZHOU Jie,et al.Discussion on topology optimal design of nozzle motion structure under dynamic load[J].Journal of Rocket Propulsion,2021,47(05):42-48.
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SHI Bo,HUANG Xuegang,ZHOU Jie,et al.Discussion on topology optimal design of nozzle motion structure under dynamic load[J].Journal of Rocket Propulsion,2021,47(05):42-48.
动态载荷下的喷管运动结构拓扑优化设计探讨
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
47
期数:
2021年05期
页码:
42-48
栏目:
研究与设计
出版日期:
2021-10-28
- Title:
- Discussion on topology optimal design of nozzle motion structure under dynamic load
- 文章编号:
- 1672-9374(2021)05-0042-07
- 分类号:
- V432
- 文献标志码:
- A
- 摘要:
- 基于等效静态载荷法(ESL)的设计思想,针对可调喷管在复杂动态力热载荷下的结构优化问题,提出通过刚体动力学仿真提取动态力载荷,按照运动过程分离成多个工况,将动态载荷下的结构优化问题转化成静态载荷下的多工况联合结构优化问题,简化了问题的求解难度。通过这种方法对喷管运动结构开展拓扑优化得到改进结构,开展多工况力热载荷仿真修改模型,迭代获得最终优化方案。优化结构对应各个工况最大位移减少22%～34%,最大应力减少10%～15%,结构质量减少24%。设计方法的有效性得到验证,为动态力热载荷下的结构优化探索出实用的设计方法。
- Abstract:
- In order to optimize the variable nozzle motion structure under the complex dynamic force and variable thermal load,a new design method was proposed based on the idea of Equivalent Static Load(ESL). Firstly,the dynamic force load was extracted by rigid dynamics simulation,and then several working conditions were separated according to the motion process. In this way,the structure optimization under the dynamic load was transformed into the joint structure optimization under several static loads. The difficulty of solving problem was simplified. The topology optimization of nozzle motion structure was carried out with this method. The optimal structure was modified based on the calculation of strength and stiffness for multiple working conditions under force and thermal load. The final optimized structure was obtained by design iteration. The results show that the maximum displacement of the improved structure is reduced by 22% to 34%,the maximum stress is reduced by 10% to 15%,the weight is reduced by 24%. The effectiveness of the method has been proved,which provides a practical design method for structure optimization under dynamic force and variable thermal load.
参考文献/References:
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备注/Memo
基金项目:国家自然科学基金(11702205)
作者简介:石波(1980—),男,硕士,高级工程师,研究领域为冲压发动机总体设计。
更新日期/Last Update:
1900-01-01