中北大学学报（自然科学版）2025，Vol.46Issue(2)：157-164,8.DOI:10.62756/jnuc.issn.1673-3193.2023.10.0007
固体火箭发动机工作压强对柔性接头性能的影响
Influence of Solid Rocket Motor Working Pressure on the Performance of Flexible Joints
李国才 1刘凯 1王亦松 1李瑾 1郑永秋2
作者信息
- 1. 西安航天动力技术研究所,陕西 西安 710025
- 2. 中北大学 极限环境光电动态测试技术与仪器全国重点实验室,山西 太原 030051
- 折叠
摘要
Abstract
High working pressure can result in various adverse effects on the flexible joints,and even cause operational instability.Previous research has been inadequate in explaining the factors contributing to the diminished shaking torque or its instability in flexible joints subjected to high pressure,which brings troubles to the design of flexible joints.In order to study the force and working mechanism of flexible joints under high working pressure,flexible joints under high pressure and strong working conditions were taken as the research object in this paper,a simulation model of flexible joint was established by ABAQUS finite element software.Numerical simulations were performed to analyze the influence of pres-sure on the height and swing torque of flexible joints,and further experimental tests were carried out.The maximum deviation of the flexible joint height change is within 12%,and the maximum deviation of the swing torque is within 10%,thus confirming the precision of the finite element model.The relation-ship between the height and the shaking moment of the flexible joint and the pressure was ultimately deter-mined.Calculation formulas were provided to streamline the guidance for engineering design.Considering the trends of deformation and shaking moment of the flexible joint,a macroscopic analysis was conducted for the first time to investigate the decrease in shaking moment of the flexible joint under high volumetric pressure.With the increase of volumetric pressure,the asymmetry of forces caused by deformation of the flexible joint results in decrease of the shaking moment until instability.A method was proposed to assess the stability of the flexible joint,offering guidance for subsequent flexible joint design.关键词
柔性接头/失稳/高压强/摆动力矩Key words
flexible joints/instability/high pressure/swing torque分类
航空航天引用本文复制引用
李国才,刘凯,王亦松,李瑾,郑永秋..固体火箭发动机工作压强对柔性接头性能的影响[J].中北大学学报（自然科学版）,2025,46(2):157-164,8.
