货车转向架的抗菱、抗剪与抗弯刚度

The Diamond Deformation,Shearing and Bending Rigidity of Freight Car Bogies

从简化的二轴转向架轮对间抗弯、抗剪刚度的概念出发，阐述了它们对车辆直线蛇行稳定性与曲线通过性能的影响；讨论了构架式、准构架式和三大件式转向架的抗弯、抗剪刚度与一系悬挂和抗菱刚度的关系，澄清了货车转向架抗菱刚度的定义，并给出了三大件式转向架抗菱刚度的计算方法。

This paper begins with the concepts of shearing rigidity and bending rigidity between wheelsets of the simplified two axle bogie,their effect on the tangent line hunting stability and curve negotiating performance is expounded;The relations between the bending rigidity,shearing rigidity and the primary suspension and the diamond deformation rigidity of the frame type,quasi frame type and three pieces bogies are discussed;The definition of diamond deformation rigidity of freight car bogies is clarified;And the calculation method of the diamond deformation rigidity of the three pieces bogies is given.