Please wait a minute...
空天防御  2023, Vol. 6 Issue (2): 95-99    
0
  耦合动力学仿真与试验技术 本期目录 | 过刊浏览 | 高级检索 |
随动推力作用下细长体结构振动模态特性及稳定性分析
李海东1, 沈奕哲1, 侯凯宇2, 夏鹏1, 刘陆广1, 管耀耀3
1. 上海机电工程研究所,上海 201109; 2. 上海航天技术研究院,上海 201109; 3.上海航天精密机械研究所,上海 201600
Vibration and Stability Analysis of the Slender Body under Follower Thrust
LI Haidong1, SHEN Yizhe1, HOU Kaiyu2, XIA Peng1, LIU Luguang1, GUAN Yaoyao3
1. Shanghai Electro Mechanical Engineering Institute, Shanghai 201109, China; 2. Shanghai Academy of Spaceflight Technology, Shanghai 201109, China; 3. Shanghai Spaceflight Precision Machinery Institute, Shanghai 201600, China
全文: PDF(569 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 引入随动推力横向分量的细长体结构的振动模态特性与稳定性进行对比分析。分析结果表明:随动推力轴向分量作为保守力,引起细长体结构轴向刚度的削弱;随动推力横向分量为非保守力,使系统的动力学失稳临界值高于静态屈曲的临界值。在失稳临界点,细长体结构的1、2阶频率重合,说明随动推力横向分量引起细长体结构模态间的刚度耦合。因此,对于弯曲振动明显的细长体结构,随动推力横向分量的影响不可忽略。
服务
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章
关键词 细长体随动推力横向分量模态特性    
Abstract: The modal characteristics and stability of the slender body which can be subjected to follower thrust were compared and analyzed. It was shown that the axial component of follower thrust which was conservative would weaken the axial stiffness of the slender body. The critical value of dynamic instability of the slender body under the non-conservative transverse component was higher than its value of static buckling. At the critical point, the 1st and 2nd frequencies of the slender body remained the same. This indicates that the stiffness of different modes couples together under follower thrust. Therefore, the transverse component of thrust should be considered for the slender body, especially with obvious bending vibration.
Key words slender body    follower thrust    transverse component    modal characteristics
     出版日期: 2023-07-06
ZTFLH:  O 326  
  V 214.33  
基金资助:国家重点研发计划(2022YFB3705304)
作者简介: 李海东(1982—),女,硕士,高级工程师,主要研究方向为结构动力学与气动弹性力学。
引用本文:   
李海东, 沈奕哲, 侯凯宇, 夏鹏, 刘陆广, 管耀耀. 随动推力作用下细长体结构振动模态特性及稳定性分析[J]. 空天防御, 2023, 6(2): 95-99.
LI Haidong, SHEN Yizhe, HOU Kaiyu, XIA Peng, LIU Luguang, GUAN Yaoyao. Vibration and Stability Analysis of the Slender Body under Follower Thrust. Air & Space Defense, 2023, 6(2): 95-99.
链接本文:  
https://www.qk.sjtu.edu.cn/ktfy/CN/      或      https://www.qk.sjtu.edu.cn/ktfy/CN/Y2023/V6/I2/95

参考文献
[1] 秦汉, 伍彬, 宋玉辉, 刘金, 陈兰. 细长体高速风洞超大攻角支撑干扰数值分析[J]. 空天防御, 2022, 5(3): 44-51.
[2] 梁伟, 张鑫, 赵文龙, 李欣, 段旭. 亚跨声速大攻角条件下细长体外形侧向喷流气动干扰研究[J]. 空天防御, 2022, 5(3): 38-43.
[3] 王方剑, 宋玉辉, 刘金, 秦汉, 陈兰. 细长体亚跨声速超大攻角复杂气动特性研究[J]. 空天防御, 2022, 5(3): 27-37.
[4] 从善学, 徐雪松. 上端水平周期运动下悬垂型水下细长体响应幅值包络线的特性分析[J]. 上海交通大学学报, 2021, 55(1): 32-39.
沪ICP备15013849号-1
版权所有 © 2017《空天防御》编辑部
主管单位:中国航天科技集团有限公司 主办单位:上海机电工程研究所 上海交通大学出版社有限公司