少片钢板弹簧片间动摩擦系数计算方法研究

为研究钢板弹簧的片间动摩擦特性,提出一种少片钢板弹簧片间动摩擦系数计算方法。首先根据少片钢板弹簧的变形运动学特性,推导出少片钢板弹簧动摩擦系数与静摩擦系数的关系;然后分别基于力学法和能量法建立少片钢板弹簧静摩擦系数计算模型,根据摩擦功相等原理,得出板簧静摩擦系数计算方法;最后根据钢板弹簧动、静摩擦系数的关系,推导出少片钢板弹簧片间动摩擦系数计算方法。计算结果表明:摩擦系数的计算值和实际工况值基本吻合。以某企业实际板簧为例,对上述计算模型进行了实验验证。

Study on Calculation Method of Dynamic Friction Coefficient between the Sheets of a Less-sheet Leaf Spring

In order to study the dynamic friction characteristics of the leaf spring, a method for calculating the dynamic friction coefficient between the spring sheets is proposed. Firstly, according to the deformation kinematic characteristics of the leaf spring, the relationship between the dynamic friction coefficient and the static friction coefficient of the spring is deduced.Then, based on the mechanics method and energy method, the static friction coefficient calculation model of the plate spring is established. According to the principle of friction work, the calculation method of static friction coefficient of plate spring is obtained.Finally, according to the relationship between the dynamic and static friction coefficient of the steel plate spring, the calculation method of the friction coefficient between the spring pieces is deduced.The calculated results show that the calculated values of the friction coefficient are in good agreement with the values in the actual working conditions.Taking the actual leaf spring of an enterprise as an example, the above calculation model is verified experimentally.