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1 前言在各种以柴油机为动力的装置中,发动机和从动机之间常常是用弹性联轴节相连接的,而且转速范围很广,这就有必要对包括发动机、联轴节和从动机在内的整个系统的扭振问题进行研究。在单机扭振计算时求得的比较准确的危险转速,在连接上橡胶弹性联轴节和从动机后会产生一定的变化。下面对影响整个装置系统扭振计算因素之一的橡胶弹性联轴节(简称橡胶联轴节,下同)的动态特性作简单介绍。 2 橡胶联轴节动态特性由于橡胶的负荷-形变曲线是非线性的,因此,它的静态刚度和动态刚度是不相同的。也就是
1 Introduction In various diesel-powered devices, the engine and the sub-engine are often connected by flexible couplings, and the speed range is very wide, it is necessary to include the engine, the coupling and the slave Torsional vibration problems were investigated throughout the system. In the calculation of single torsional vibration calculated more accurate dangerous speed, connected to the rubber elastic coupling and the slave will have some changes. The following is a brief introduction to the dynamic characteristics of the rubber elastic coupling (referred to as the rubber coupling, the same below) that affects one of the factors that determine the torsional vibration of the entire system. 2 Rubber Coupling Dynamic Characteristics As the load-deformation curve of rubber is non-linear, so its static stiffness and dynamic stiffness are not the same. That is