论文部分内容阅读
连杆强度计算,广泛采用有限元法。为使计算应力接近于实际应力,计算时,大端的边界条件应采用连杆轴承油膜压力,而连杆大端刚度较弱,计算连杆轴承油膜压力的流体动力润滑雷诺方程应计入弹性变形影响。为此作者设计了一套测量连杆大端弹性变形的模拟装置。采用激光散斑技术,测定连杆大端(模型)在模拟的工作条件下产生的弹性变形量。同时在模拟装
Link strength calculation, the widely used finite element method. In order to make the calculated stress close to the actual stress, the boundary condition of the large end should adopt the oil film pressure of the connecting rod bearing while the rigidity of the large end of the connecting rod is weak. The hydrodynamic lubrication Reynolds equation for calculating the oil film pressure of the connecting rod bearing should be included in the elastic deformation influences. For this reason, the author designed a simulation device for measuring the elastic deformation of the large end of the connecting rod. Using laser speckle technique, the amount of elastic deformation produced by the big end of the connecting rod (model) under simulated working conditions was measured. At the same time in the simulation equipment