FAST三角形反射面单元滑动故障与结构损伤的力学分析和改进方法

李辉; 宋立强; 杨清阁; 李庆伟

doi:10.16511/j.cnki.qhdxxb.2022.26.033

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清华大学学报（自然科学版） ›› 2022, Vol. 62 ›› Issue (11) : 1823-1832. DOI: 10.16511/j.cnki.qhdxxb.2022.26.033

论文

FAST三角形反射面单元滑动故障与结构损伤的力学分析和改进方法

李辉^1,2, 宋立强^1,2, 杨清阁^1,2, 李庆伟^1,2

作者信息 +

Analyses and improvement method of sliding failures and structural damage of the triangular reflector elements in FAST

LI Hui^1,2, SONG Liqiang^1,2, YANG Qingge^1,2, LI Qingwei^1,2

Author information +

文章历史 +

摘要

该文介绍了500 m口径球面射电望远镜（five-hundred-meter aperture spherical radio telescope，FAST）反射面单元的组成和工作原理。对三角形单元的滑动故障和结构损伤原因进行了力学建模与分析，提出了免于故障和损伤的改进建议，包括3种自适应连接机构的新型布局、反射面单元故障判断方法和自适应连接机构设计改进等。该文力学模型可以帮助望远镜维护人员分析三角形反射面单元故障和损伤的主要原因，预测故障发生模式和可能发生故障的危险单元分布位置，从而有针对性地进行改进。该文有助于望远镜维护人员在日常巡检中通过目测手段，及时发现反射面单元的异常现象，防止问题继续恶化，有利于未来设备维护和更换。

Abstract

This paper describes the configuration and operating principle of the five-hundred-meter aperture spherical radio telescope (FAST) reflector elements with sliding failures and the resulting structural damage analyzed using mechanical modelling of the triangular reflector elements. Design improvements were then developed to avoid such failures and damages, including new arrangements of the adaptive connecting mechanisms, element failure identification methods and upgrade of the adaptive connecting mechanisms. The analysis model helps maintenance staff find the main reasons for triangular element failures and predict possible failure modes and damaged element positions to develop improved designs. The results enable the staff to more quickly locate abnormal reflector elements using routine visual inspection and prevent the worse failures to improve equipment maintenance and enable future upgrades.

导出引用

李辉, 宋立强, 杨清阁, 李庆伟. FAST三角形反射面单元滑动故障与结构损伤的力学分析和改进方法[J]. 清华大学学报（自然科学版）. 2022, 62(11): 1823-1832 https://doi.org/10.16511/j.cnki.qhdxxb.2022.26.033

LI Hui, SONG Liqiang, YANG Qingge, LI Qingwei. Analyses and improvement method of sliding failures and structural damage of the triangular reflector elements in FAST[J]. Journal of Tsinghua University(Science and Technology). 2022, 62(11): 1823-1832 https://doi.org/10.16511/j.cnki.qhdxxb.2022.26.033

参考文献

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基金

国家自然科学基金面上项目（11573044）；中国科学院重大科技基础设施维修和改造项目（DSS-WXGZ-2021-0001）

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收稿日期	出版日期
2021-11-11	2022-11-15
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2022-10-19

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