航天推进技术研究院主办
[1]张允涛,薛杰,宋少伟,等.轨姿控发动机振动试验夹具结构拓扑优化[J].火箭推进,2023,49(01):93-102.
ZHANG Yuntao,XUE Jie,SONG Shaowei,et al.Structural topology optimization of vibration test fixture for orbit and attitude control engines[J].Journal of Rocket Propulsion,2023,49(01):93-102.
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ZHANG Yuntao,XUE Jie,SONG Shaowei,et al.Structural topology optimization of vibration test fixture for orbit and attitude control engines[J].Journal of Rocket Propulsion,2023,49(01):93-102.
轨姿控发动机振动试验夹具结构拓扑优化
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
49
期数:
2023年01期
页码:
93-102
栏目:
目次
出版日期:
2023-02-25
- Title:
- Structural topology optimization of vibration test fixture for orbit and attitude control engines
- 文章编号:
- 1672-9374(2023)01-0093-10
- 分类号:
- V434.3
- 文献标志码:
- A
- 摘要:
- 针对轨姿控发动机部分振动试验夹具存在质量偏大、频率特性差等问题,采取拓扑优化的方法对典型试验夹具进行了结构设计改进。基于Optistruct的拓扑优化模块,讨论了动力学拓扑优化模型及多目标优化的实现策略,介绍了离散度参数及最小成员尺寸等优化控制参数的设置。通过对推力装置块状试验夹具的拓扑优化,研究了优化目标及控制参数对优化结果的影响。优化后夹具频率特性满足试验要求,减速效果明显。通过实物振动试验,验证了正弦振动和随机振动试验条件下夹具控制响应平稳,满足试验容差要求。最后,通过对某型轨姿控发动机整机锥状试验夹具的结构设计改进,进一步拓展应用了拓扑优化方法。仿真结果表明,优化后夹具的模态频率和动态响应特性显著改善,为后续发动机振动试验夹具设计提供借鉴。
- Abstract:
- Aiming at the problems of some vibration test fixture of orbit and attitude control engines,such as large mass, low frequency characteristic, the topology optimization method was adopted to improve the structure design of typical test fixture.Based on the topology optimization module of Optistruct software, the dynamic topology optimization model and multi-objective optimization strategy were discussed, and the setting of optimization control parameters such as dispersion parameters(DISCRETE)and minimum member size(MINDIM)was introduced.Based on the topology optimization of block test fixture of thrust device, the influence of optimization objectives and control parameters on optimization results was studied.The optimized fixture frequency characteristics meet the test requirements, and the weight reduction effect is obvious.The fixture control response under sinusoidal and random vibration test conditions is verified to be stable and effective, and meets the tolerance requirements of the test.Finally, by improving the design of cone test fixture of a certain orbit and attitude control engine, the topology optimization method is further extended and applied.The simulation results show that the modal frequency and dynamic response characteristics of the optimized fixture are significantly improved, which provides reference and guidance for the design of vibration test fixture.
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备注/Memo
收稿日期:2021-11-03 修回日期:2022-04-05
基金项目:国家自然科学基金(52005385)
作者简介:张允涛(1985—),男,硕士,高级工程师,研究领域为液体火箭发动机结构强度。
更新日期/Last Update:
1900-01-01