【摘要】 为了了解滑移型三叉式联轴器的动力学特性,建立了其动力学模型。首先,根据零件的受力分析,建立了其动力学方程组;然后,使用高斯列主元消去法对获得的动力学方程组进行求解。数值结果表明:各处所受力(矩)均相似于正弦曲线;输入输出轴两支撑处转动副和球面副的力(矩)及输出力矩都3倍频于输入轴;叉杆臂及输入轴孔上的受力都与输入轴同频率;每个叉杆臂或每个输入轴孔上的2个正交分力具有π/2的相位差,且3个叉杆臂或3个输入轴孔上的3个同方向的分力及3个叉杆臂上的3个圆周力之间具有2π/3的相位差。更多还原

【Abstract】 In order to understand the dynamic properties of the tripod sliding universal joint, its dynamic model is established. First, its dynamic equations are obtained in terms of force analysis of the components. And then, the dynamic equations are solved by using Gaussian elimination with maximal column pivoting. The main conclusions are listed as follows. The forces and torques acting on the tripod sliding universal joint are all similar to a sinusoid. The forces and torques acting on the revolute pair and spherical pair, two bearings of the input and output shafts, as well as the load torque own a threefold frequency of the input shaft. The forces acting on three tripod arms or three holes of the input shaft have a simple frequency. There is a phase difference of π/2 between two component forces of each tripod arm as well as each hole of the input shaft. As for three tripod arms or three holes of the input shaft, a phase difference of 2π/3 is found among three component forces along the same direction or the circumferential direction.更多还原