Mack B
Appl Opt. 1980 Mar 15;19(6):1000-10. doi: 10.1364/AO.19.001000.
Large finite-element mathematical models are developed to calculate the deformations induced by the supports of a 4.2-m aperture 3.2-focal ratio primary mirror of an optical telescope. It is supported axially on three rings of pneumatic cylinders and radially by a system of transverse level weights, an arrangement only possible in a telescope that uses an altazimuth mounting. The stress distributions in the mirror when lifted by a central lifter and when resting on its axial flotation system are shown. A comparison is made between the results using classical flat-plate theory and the finite-element models.
开发大型有限元数学模型以计算由光学望远镜4.2米孔径、3.2焦比主镜的支撑所引起的变形。该主镜由三组气动缸环轴向支撑，并通过横向水平配重系统径向支撑，这种布置仅在使用地平式支架的望远镜中才可行。展示了主镜在由中央升降机吊起时以及放置在其轴向浮动系统上时的应力分布。对使用经典平板理论的结果与有限元模型的结果进行了比较。
