Chinese Academy of Sciences (CAS) - Institute of Electrical Engineering
Abstract
A tie rod with a double runway type epoxy structure was designed for the cryogenic container of superconducting magnet in a 7 T magnetic resonance imaging (MRI) system weighing 27 tons. In order to ensure the stability of the magnet during transportation and normal operation,, a thorough design analysis was performed on the tie rods. This analysis encompassed various forces, including gravitational force, cold contraction force, force generated by motion load, and preload force on the tie rods. By considering these factors, the appropriate angle and material for the tie rods were determined, and the cross-sectional area of the tie rods were optimized through analysis of heat leakage.
Keywords: tension rods, magnet system, stress analysis, magnetic resonance
Xu, Zhao and Wang, Hui and Feng, Zhichao and Qu, Hongyi and Wu, Huafang and Xiao, Jing and Chen, Qi and Wang, Shuo and Cheng, Junsheng and Lei, Wang and Wang, Yaohui and Liu, Jianhua and Xu, Ce and Qiuliang, Wang, The Design and Optimization of the Tie Rod to Ensure the Precision of the Cryogenicc Container in the 7 T MRI System. Available at SSRN: https://ssrn.com/abstract=4670045 or http://dx.doi.org/10.2139/ssrn.4670045
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