车轮表面宏观形貌取向对高速轮轨水润滑黏着系数的影响
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蒋华臻, 王保安, 李正阳, 蔡宝春, 杨兵, 任志远
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INFLUENCE OF MACROSCOPIC TOPOGRAPHY ORIENTATIONS OF WHEELS ON ADHESION COEFFICIENT OF HIGH SPEED WHEEL/RAIL UNDER WATER LUBRICATION
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Jiang Huazhen, Wang Baoan, Li Zhengyang, Cai Baochun, Yang Bing, Ren Zhiyuan
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| 表1 数值模拟所用到的相关参数 |
| Table 1 The parameters used in the numerical simulation |
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Parameters
(wheels/rails or water) | Value | Effective elastic modulus
E'/ GPa | 242 | | Poisson's ratio $\nu $ | 0.3 | | $R_{1x}$/m | 0.45[17] | | $R_{2y}$/m | 0.30[17] | | Temperature/${^\circ}$C | 20 | | Normal load/N | 8.50 | #x00D7;10 | | Velocity/(km$\cdot$h$^{-1}$) | 100, 200, 300, 400, 500 | | Creep rate % | 0.0001,0.30, 0.50, 1.0, 1.5, 2.0 | Viscosity at room
temperature} $\eta _{0}/(\Pa}\cdot s) $ | 0.001 01 | Density of water at room
temperature $\rho _{0}/(g\cdot cm^{-3} $ | 1.00 |
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