真空波荡器楔口机构结构分析与优化

Mechanical analysis and optimization for taper mechanism of in-vacuum undulator

为了满足物理设计要求,楔口机构被应用于真空波荡器机械系统设计中。利用有限元分析软件ANSYS Workbench对上海光源真空波荡器的关键部件——楔口机构进行了线性静态分析,得到了该关键部件的变形和应力分布情况及它们对外大梁变形和滚动角的影响,采用补偿弹簧系统并进行参数优化减小了影响,使之满足工作中的高精度需要。分析结果在真空波荡器调试过程中得到了验证,与实际情况基本吻合。

In order to meet the physical requirements,taper mechanism was applied to mechanical system design of in-vacuum undulator.This paper conducted a linear static analysis on taper mechanism,the key part of in-vacuum undulator developed by the Shanghai Synchrotron Radiation Facility,with finite element analysis software ANSYS Workbench,and obtained the distribution of deformation and stress and their effects on deformation and roll angle of the out-vacuum girder.The effects caused by taper mechanism were then minimized through compensating spring system to meet high accuracy at work.The analysis result was verified in the process of commissioning and is consistent with the actual situation.