Analysis on wheel-rail contact of 65-m radio telescope
Analysis on wheel-rail contact of 65-m radio telescope
复制标题
65米射电望远镜轮轨接触分析
DOI：
10.1109/icetce.2011.5774515
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Guo
中科院分区：
文献类型：
--
作者：
Li Fu;H. Qian;F. Fan;J. Zhong;Guo
Based on the Hertz linear elastic contact theory, the maximum contact pressure and contact width of wheel-rail are obtained. It follows the oval distribution regularly in combination with the formulation of contact pressure. Referring to contact width, the contact area is defined by redevelopment. Nonlinear contact problem has been analyzed by applying three-dimensional finite element model. It is shown that their variation trends are in excellent agreements followed by comparisons between theoretical and numerical results. The fatigue life of rail is predicted based on contact fatigue theory. The fatigue strength is checked in terms of the maximum contact stress. It is shown that life requirement is met. The analysis of static contact and dynamic fatigue ensures the structure security to the wheel-rail of 65 meter radio telescope.
