大口径望远镜方位轴系静承载能力分析

针对大口径光学望远镜方位轴系的结构特点, 利用 ANSYS建立了相应结构的二维简化模型, 对接触刚度、接触算法等接触仿真相关参数进行了简要分析与设定。结果表明, 与经典的赫兹接触理论相比, ANSYS计算得到的最大接触压力与弹性趋近量误差分别为 4.3%和 0.4%, 验证了 ANSYS分析中模型建立和参数设置的合理性。再利用所得 ANSYS模型, 结合轴承实际参数, 对该望远镜方位轴系的平面止推轴承进行了静力学分析, 建立了一种静承载能力曲线的绘制方法, 为大口径望远镜方位轴系设计提供了可靠的理论依据。

Abstract

According to the structure of large-aperture telescopes azimuth shafting, ANSYS was utilized to establish the two-dimensional model. The contact stiffness, contact algorithm and other contact simulation parameters were analyzed and set. The results show that, compared with the classical Hertz contact theory, the error of maximum contact pressure and elastic approach which were calculated by ANSYS are 4.3% and 0.4%. The results verify the rationality of the model and the parameter setting in ANSYS analysis. Using the ANSYS model, the static analysis of the plane thrust bearing was conducted. A method for the drawing of static bearing capacity curve is established, which provides a reliable theoretical basis for the design of the azimuth shafting of large-aperture telescopes.

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乔明, 任戈, 谭毅. 大口径望远镜方位轴系静承载能力分析[J]. 光电工程, 2014, 41(12): 14. QIAO Ming, REN Ge, TAN Yi. Static-load Supporting Capability Analysis for Azimuth Shafting of a Large-aperture Telescope[J]. Opto-Electronic Engineering, 2014, 41(12): 14.

大口径望远镜方位轴系静承载能力分析

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