CAJ | 학술논문

含轴承的轴系结构有限元分析是当前分析的难点,本文针对大口径望远镜方位轴系平面止推轴承的结构特点,设计并搭建了基于丹泰克动力学公司光学非接触式位移测量分析系统的平面止推轴承弹性趋近量测试平台.通过对平面止推轴承接触问题的实验研究,得到了平面止推轴承接触刚度曲线.建立了符合实际工况的有限元分析模型并给出了关键参数的推荐值.结果表明,所建立的有限元模型仿真结果与实验结果相差不超过 2.47 μm,最大误差仅为11%,验证了有限元模型建立的准确性,为大口径望远镜方位轴系静力学分析提供了可靠的依据.
함축승적축계결구유한원분석시당전분석적난점,본문침대대구경망원경방위축계평면지추축승적결구특점,설계병탑건료기우단태극동역학공사광학비접촉식위이측량분석계통적평면지추축승탄성추근량측시평태.통과대평면지추축승접촉문제적실험연구,득도료평면지추축승접촉강도곡선.건립료부합실제공황적유한원분석모형병급출료관건삼수적추천치.결과표명,소건립적유한원모형방진결과여실험결과상차불초과 2.47 μm,최대오차부위11%,험증료유한원모형건립적준학성,위대구경망원경방위축계정역학분석제공료가고적의거.
Finite element analysis of shafting structure containing bearing is difficult in the current. According to the structure of large-aperture telescopes azimuth shafting, we designed and built an experimental platform to measure the elastic approaching of the plane thrust bearing. The experimental platform was based on the Dantec dynamic company's non-contact measurement and analysis system for displacement. We got the stiffness curve of the plane thrust bearing by the experimental study of the contact problems. A finite element model in line with the actual working conditions was established and the recommended values of key parameters were given. The results show that, compared with the experimental results, the difference of elastic approaching which was calculated by ANSYS is within 2.47μm and the maximum error is 11%. The results verify the accuracy of the finite element model and provide a reliable basis for the static analysis of the azimuth shafting of large-aperture telescopes.