北京天文台兴隆观测站2.16米望远镜对星模式     

高震东 《紫金山天文台台刊》1994,(1)

The pointing accuracy of a telescope is influenced by its encoder system, by the alignments of the mounting relative to the earth's axis of rotation, by the alignment of the optics, by mechanical effects like the flexture of the tube and by systemtic errors of the drive system. As to the 2.16m telescope, it is necessary to establish a pointing model to make normal obsercation easier. In this paper, an empirical approach to set up the pointing model for the 2.16m telescope was reported together with a physical interpretation of most of the individual parameters of this model.  相似文献   

浮式生产储油轮船艏结构疲劳分析   总被引：4，自引：2，他引：4  

高震胡志强  顾永宁江华涛 《海洋工程》2003,21(2):8-15

由单点平台系泊的浮式生产储油轮的船脂结构承受着交变系泊力作用。通过详细的脂部结构有限元模型，进行了应力分析，应用S—N曲线和Miner线性疲劳累积损伤原理，进行了疲劳分析，预报了焊缝疲劳寿命。  相似文献