• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International symposium on advanced optical manufacturing and testing technologies >Structural design of 3m class ground based telescope elevation ring
【24h】

Structural design of 3m class ground based telescope elevation ring

机译：3m级地基望远镜仰角环的结构设计

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In order to improve the dynamic stiffness of telescope mount, the accuracy of aiming and stability of optical system, a topology optimization method based on the theory of variable density and taking maximum stiffness as objective function is studied. In the topology optimization analysis of elevation ring, one of the most important members of the telescope mount, two kinds of structural are designed: one is a traditional plate welding structure and the other is a combination of plate welding and truss welding. Furthermore, the stiffness and modal performance of the elevation ring in different performances are analyzed and compared. The results show that in meeting the strength and stiffness of the premise, the mass of elevation ring with plate welding and truss welding is 7.00T and the moment of inertia is 11.94 t·m~2. What's more, the total deformation in the horizontal direction and the zenith direction are 6.70um and 55.86um, respectively; the stress is within stress range of material's promise; the modal is 105.9Hz.Compared with the traditional structural with plate welding, this new structural design approached to ensure the dynamic stiffness while effectively reducing its own weight with reduction rate 10.7% and moments of inertia with reduction rate 12.3%. This new structural of plate welding and truss welding has obvious advantages in lightweight design. This new design method based on topology optimization will provide efficient help to later components design of the telescope mount.
机译：为了提高望远镜支架的动态刚度，瞄准精度和光学系统的稳定性，研究了一种基于变密度理论并以最大刚度为目标函数的拓扑优化方法。在高程环的拓扑优化分析中，伸缩架是最重要的构件之一，设计了两种结构：一种是传统的平板焊接结构，另一种是平板焊接和桁架焊接的结合。此外，分析并比较了不同性能下的升降环的刚度和模态性能。结果表明，在满足强度和刚度的前提下，平板焊接和桁架焊接的立环质量为7.00T，转动惯量为11.94 t·m〜2。此外，水平方向和天顶方向的总变形分别为6.70um和55.86um。应力在材料承诺的应力范围内;模态为105.9Hz。与传统的板焊接结构相比，这种新的结构设计在确保动态刚度的同时，有效降低了自身重量，降低了10.7％，并减少了惯性矩，降低了12.3％。平板焊接和桁架焊接的这种新结构在轻量化设计中具有明显的优势。这种基于拓扑优化的新设计方法将为望远镜安装架的后续组件设计提供有效的帮助。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号