摘要
奥氏体不锈钢波纹管作为液体火箭发动机推进剂管道补偿器的主要组成部分,其刚度特性对于管路稳定非常重要。为研究大口径波纹管的层间接触状态对刚度的影响,以摩擦因数和层间间隙描述接触状态,揭示层间接触状态对波纹管轴向压缩刚度影响的特点。最终将有限元计算结果与实验数据进行对比,误差小于20%,准确性远胜传统公式。
Austenitic stainless steel bellows are the main component of liquid rocket engine propellant pipeline compensator,and their stiffness characteristics are very important for pipeline stability.In order to study the influence of interlayer contact state on the stiffness of large-diameter bellows,the friction coefficient and interlayer gap were used to describe the contact state,and the characteristics of the influence of interlayer contact state on the axial compression stiffness of bellows were revealed.Finally,the finite element calculation results are compared with the experimental data,the error is less than 20%,the accuracy is far better than the traditional formula.
作者
赵一凡
汪庆华
刘旭谦
ZHAO Yi-fan;WANG Qing-hua;LIU Xu-qian(School of Mechatronic Engineering,Xi'an Technological University,Xi'an 710021,China)
出处
《机械工程与自动化》
2024年第1期43-45,共3页
Mechanical Engineering & Automation
基金
国家自然科学基金资助项目(52275510)。
关键词
火箭发动机
多层波纹管
轴向刚度
接触分析
rocket engine
multilayer bellows
axial stiffness
contact analysis
