FAST望远镜馈源支撑中的力学问题及其研究进展  

MECHANICS IN THE FEED SUPPORT OF FAST TELESCOPE AND ITS RESEARCH PROGRESS

作　　者：李辉[1] 朱文白[1] 潘高峰[1] 

机构地区：[1]中国科学院国家天文台,北京100012

出　　处：《力学进展》2011年第2期133-154,共22页Advances in Mechanics

基　　金：国家自然科学基金项目(10973023)资助~~

摘　　要：500m口径球面射电望远镜FAST拥有多项创新和关键技术,并涉及多个工程学科领域,其中力学在望远镜设备的研制、建设和维护中扮演了非常重要的角色,包括望远镜台址的开挖与支护、反射面系统和馈源支撑系统等的设计均离不开对有关力学问题的分析.本文对十多年来FAST望远镜的馈源支撑系统中与力学方面相关的研究进展进行了全面回顾,重点介绍了当前的研究难点及其有待深入解决的问题.与传统望远镜的刚性馈源支撑相比FAST馈源支撑是一个完全创新的柔性机构,几乎在每一项子系统和机构单元的设计中均存在多种可能的方案设想,需要从中进行优化选择.从力学角度对每一种方案进行性能评估,为最终的方案优化设计提供合理依据也是当前研究工作的一项紧迫任务.The five-hundred-meter Aperture Spherical radio Telescope（FAST） has several innovations and key technologies involved in multiple engineering disciplines,where mechanics plays a key role in the development, construction and maintenance of the telescope.A lot of design concepts about the excavation and support work of the Karst depression,the active reflector and feed support are based on the relative analyses in mechanics.An overall review in a span of the last ten years is given on the research progress in mechanics of the FAST feed support,where more attention is paid on the current research difficulties or problems further to be cracked.Compared with rigid feed support structure of many traditional telescopes,the FAST feed support is an innovatively flexible mechanism,so there are many possible options almost for the design of every subsystem or mechanical unit,and an optimal one has to be selected from them.As a result,it is also urgent for the researchers to compare all possible concepts from viewpoint of mechanics and to provide reasonable analysis on which a final optimal design might be justified.

关 键 词：FAST望远镜 馈源支撑 设计方案 

分 类 号：TH751[机械工程—仪器科学与技术]