【摘要】 基于对某型液力减速器内流场的CFD数值模拟,运用坐标变换、曲面拟合等方法,得到其叶片表面的压力随局部坐标x,y变化的二元函数.根据拟合的压力分布函数,应用编制的APDL程序,将分布载荷施加到利用有限元分析软件ANSYS建立的FEA模型,从而实现了对流体压力作用下的叶片强度问题较为精确的有限元分析.结果表明,在最高转速工况,叶片根部应力过大,存在安全隐患.更多还原

【Abstract】 Based on CFD numeric simulation for hydraulic retarder inner flow field,the pressure distribution functions of the rotator blades surfaces are regressed by coordinate transformation and surface fitting.Through the APDL program,pressure loads are loaded on the FEA model according to the regressed pressure functions,which vary with the x-and y-coordinates in local coordinates.The FEA model is solved and the blades strength is analyzed more accurately.The results showed that the stress on the root of the rotator blades is much higher than the critical stress intensity of the material under the condition of maximum rotating speed.更多还原