重复使用火箭着陆缓冲的机构冲击动力学分析及实验验证

为描述运载火箭着陆引起的着陆缓冲机构横向振动,提出一种等效模型,将着陆引起的激励等效为冲击激励和稳态激励的叠加.采用假设模态法求解着陆缓冲机构的横向振动模态,并考虑轴向力与横向振动的耦合,进一步通过模态叠加法求解振动响应,得到由着陆冲击引起的着陆缓冲机构横向振动的半解析解.基于真实产品进行的垂直着陆冲击实验结果表明,该模型可较精确地描述着陆缓冲机构横向振动的响应和最大弯矩.基于该模型,分析着陆缓冲机构的构型参数和材料强度对着陆缓冲机构的影响,研究结果可为实际工程相关着陆缓冲机构的参数设计提供指导....

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Published in北京大学学报（自然科学版） Vol. 58; no. 6; pp. 977 - 988
Main Authors 袁晗, 王小军, 张宏剑, 牟宇, 王檑, 王辰
Format Journal Article
LanguageChinese
Published 北京宇航系统工程研究所, 北京 100076%中国运载火箭技术研究院, 北京 100076 20.11.2022
Subjects
参数设计
理论模型
重复使用火箭
着陆缓冲机构
着陆冲击
振动
Online AccessGet full text
ISSN0479-8023
DOI10.13209/j.0479-8023.2022.084

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Abstract 为描述运载火箭着陆引起的着陆缓冲机构横向振动,提出一种等效模型,将着陆引起的激励等效为冲击激励和稳态激励的叠加.采用假设模态法求解着陆缓冲机构的横向振动模态,并考虑轴向力与横向振动的耦合,进一步通过模态叠加法求解振动响应,得到由着陆冲击引起的着陆缓冲机构横向振动的半解析解.基于真实产品进行的垂直着陆冲击实验结果表明,该模型可较精确地描述着陆缓冲机构横向振动的响应和最大弯矩.基于该模型,分析着陆缓冲机构的构型参数和材料强度对着陆缓冲机构的影响,研究结果可为实际工程相关着陆缓冲机构的参数设计提供指导.
AbstractList 为描述运载火箭着陆引起的着陆缓冲机构横向振动,提出一种等效模型,将着陆引起的激励等效为冲击激励和稳态激励的叠加.采用假设模态法求解着陆缓冲机构的横向振动模态,并考虑轴向力与横向振动的耦合,进一步通过模态叠加法求解振动响应,得到由着陆冲击引起的着陆缓冲机构横向振动的半解析解.基于真实产品进行的垂直着陆冲击实验结果表明,该模型可较精确地描述着陆缓冲机构横向振动的响应和最大弯矩.基于该模型,分析着陆缓冲机构的构型参数和材料强度对着陆缓冲机构的影响,研究结果可为实际工程相关着陆缓冲机构的参数设计提供指导.
Author 王檑
张宏剑
王小军
王辰
袁晗
牟宇
AuthorAffiliation 北京宇航系统工程研究所, 北京 100076%中国运载火箭技术研究院, 北京 100076
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ZHANG Hongjian
WANG Chen
MOU Yu
YUAN Han
WANG Lei
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Keywords 参数设计
理论模型
重复使用火箭
着陆缓冲机构
着陆冲击
振动
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Title 重复使用火箭着陆缓冲的机构冲击动力学分析及实验验证
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