%0 Journal Article
%T Effect of lateral undulatory support stiffness of rail on initiation and evolution of rail corrugation<br>钢轨横向不均匀支撑刚度对钢轨波磨的影响
%A Jin Xuesong
%A Wang Kaiyun
%A Wen Zefeng
%A Li Chenghui
%A <br>金学松
%A 王开云
%A 温泽峰
%A 李成辉
%J 力学学报
%D 2005
%I 
%X A model of rail corrugation calculation is put forward. The model considers a combination of a theory of wheel/rail in rolling contact, an undulatory wear model of rail material and a dynamical performance of railway vehicle coupled with a curved Crack. A computer code for rail corrugation is developed, and the model is verified with a full scale test facility. The effects of the uneven lateral support stiffness of rail, due to discrete sleeper support, and the different curving speed of the vehicle on the initiation and development of rail corrugation are numerically investigated in detail. In the calculation the damage on the running surface of rail, concerning rail corrugation formation, is restricted to wear mechanism of rail material. Through the numerical analysis it is found that: (1) The uneven lateral support stiffness of rail, due to discrete sleeper support, easily causes the initiation and development of rail corrugation; (2) The corrugation mainly contains the same wavelength as a sleeper bay and 28-35 mm wave-lengths. The undulatory wear with 28-35 mm wave-lengths and very small depth trough is caused by a contact vibration of the wheel and rail at high frequencies; (3) The distribution of the maximum depth of undulatory wears on the rails under the 4 wheels of the same bogie is different; (4) The change of the curving speeds doesn't decrease the growth of the rail corrugation caused by the discrete sleeper support.
%K rail corrugation
%K sleeper bay
%K rolling contact
%K contact vibration
%K material wear
%K dynamics<br>钢轨波磨
%K 轨枕间距
%K 滚动接触力学
%K 接触振动
%K 材料磨损
%K 动力学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=08EB016866809653&yid=2DD7160C83D0ACED&vid=42425781F0B1C26E&iid=B31275AF3241DB2D&sid=8CC50269EED5BB47&eid=762CFFBBDED11937&journal_id=0459-1879&journal_name=力学学报&referenced_num=1&reference_num=25