空间管路结构振动控制技术研究
Research of Random Vibration Response of Space Pipeline Structure and Vibration Control Technology
李志强 1张佳琪 2陈江攀 3高博 1张忠1
作者信息
- 1. 北京强度环境研究所,北京 100076;北京强度环境研究所 可靠性与环境工程技术重点实验室,北京 100076
- 2. 北京强度环境研究所,北京 100076
- 3. 北京电子工程总体研究所,北京 100854
- 折叠
摘要
飞行器在服役过程中,管路结构会产生大量级振动响应,严重时会发生断裂失效.振动控制是延缓管路结构失效,提升可靠性的主要途径.本文通过边界简化及焊接部位建模,建立了复杂空间三维管路结构动力学模型,模态仿真结果与试验模态结果对比最大误差小于3%.在此基础上,使用金属减振器进行振动控制.通过计算,获得随机振动载荷下使用金属减振器前后空间管路结构的减振效率为8.46%;通过试验获得金属减振器实际的减振效率达到14.26%.本文计算和试验结果表明使用金属减振器能够显著降低复杂空间管路结构的振动响应.
Abstract
During the flight process,the pipeline structure of the aircraft will produce a great vibration response,which may lead to fracture failure in serious cases.Vibration control is the main way to delay the failure of pipeline structure and improve the reliability.In this paper,through boundary simplification and welding position modeling,a three-dimensional dynamic model of complex space pipeline structure is established.The maximum error of the modal simulation results is less than 3%compared with the experimental modal results.On this basis,the metal shock absorb-er is used to control the vibration.Through calculation,the vibration reduction efficiency of space pipeline structure be-fore and after using metal shock absorber is 8.46%under random vibration load.The actual damping efficiency of the metal shock absorber reached 14.26%through the test.The results of calculation and test show that the metal shock ab-sorber can significantly reduce the vibration response of complex space pipeline structures.
关键词
振动控制/管路结构/金属减振器/随机振动试验Key words
vibration control/pipeline structure/metal shock absorbers/random vibration test引用本文复制引用
出版年
2024
NETL
NSTL
万方数据