高能光源束流位置探测器支撑架结构优化设计  

Structural optimization design for beam position monitor support of High Energy Photon Source

作　　者：王安鑫[1,2] 王梓豪 麻惠洲[1] 李春华[1,3] 聂小军[1,2] 陈佳鑫 朱东辉 余洁冰[1,2] 贺华艳 王广源[1,2] 于永积 刘仁洪[1,2] 张俊嵩 邱瑞阳 刘磊[1,2] 康玲 Wang Anxin;Wang Zihao;Ma Huizhou;Li Chunhua;Nie Xiaojun;Chen Jiaxin;Zhu Donghui;Yu Jiebing;He Huayan;Wang Guangyuan;Yu Yongji;Liu Renhong;Zhang Junsong;Qiu Ruiyang;Liu Lei;Kang Ling(Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Spallation Neutron Source Science Center,Dongguan 523803,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院高能物理研究所,北京100049 [2]散裂中子源科学中心,广东东莞523803 [3]中国科学院大学,北京100049

出　　处：《强激光与粒子束》2021年第4期86-94,共9页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(11805220)。

摘　　要：从热稳定性和振动稳定性两个角度出发,优化设计得到了超高稳定的刚性支撑架结构;通过ANSYS有限元模态分析,验证了结构的热膨胀变化量和特征频率;采用混凝土二次灌浆方法对支撑架进行地面固定和特征频率测试,结果表明,支撑架结构的特征频率达到61.9 Hz、振动幅值小于30 nm,均满足设计要求。最后采用动态刚度测试方法,得到混凝土二次灌浆层的主要刚度值,进一步验证支撑架结构优化结果的准确性。Based on thermal stability and vibration stability,an ultra stability structure of rigid support is designed and optimized.Through the finite element modal analysis of ANSYS,the thermal expansion variation and the characteristic frequency of the support is verified.The support is fixated to the ground by using the method of concrete grouting and then the characteristic frequency is tested.The test results show that the characteristic frequency of the support reaches up to 61.9 Hz and the vibration amplitude is less than 30 nm,both of which meet the design requirements.Finally,the method of dynamic stiffness testing is adopted to obtain the stiffness value of the concrete grouting,and the accuracy of the optimization results of the support is further verified.

关 键 词：高能光源 BPM支撑架 结构优化 结构稳定性 模态测试 动态刚度 

分 类 号：TL503[核科学技术—核技术及应用]