行星滚柱丝杠副具有大推力、高速度、高精度及长寿命等特点，被广泛应用于精密机床、航空航天及武器装备等领域，并将逐渐地取代传统的滚珠丝杠副。目前，国内对行星滚柱丝杠副的基础理论研究和产品在性能及寿命上相比于国外存在明显的差距。因此，必须加快对行星滚柱丝杠副的深入研究。 本研究对行星滚柱丝杠副的静动态特性进行了分析。首先，在分析行星滚柱丝杠工作原理的基础上，推导了各主要部件之间的运动关系及参数设计公式，基于赫兹接触理论分析了行星滚柱丝杠的接触特性，并利用UG软件建立行星滚柱丝杠的三维模型；其次，建立行星滚柱丝杠简化的等效模型，基于有限元方法，运用ANSYS Workbench软件对其进行静力学分析，得到螺纹牙上等效应力及综合位移分布，为其承载特性的研究提供一种方法及理论依据；运用HyperWorks软件对整体在自由模态及三种工作模态下进行分析，分别得出其前六阶固有频率及主振型图，为丝杠副的整体设计、整个传动系统的设计提供参考；最后，运用ADAMS软件对行星滚柱丝杠进行动力学仿真，得出滚柱与丝杠及螺母之间的接触力曲线，为其静、动态特性的分析提供一种仿真方法。 静力学分析结果表明：螺纹牙上的等效应力与综合位移变化趋势基本相同，均在靠近受力端时，应力及变形较大；模态分析结果表明：当采用两端固定的支撑方式时，行星滚柱丝杠的固有频率较高，最大振幅相对较小，可承受较高的转速；动力学仿真结果表明：滚柱与丝杠之间的接触力比滚柱与螺母之间的接触力大。

Due to the planetary roller screw possess big thrust, high speed, high precision and long life and other characteristics, it is widely used to precision machine tool, machining center, aerospace and military equipment and other fields. It will gradually replace the traditional ball screw. Compared with abroad the domestic research on basic theory of the planetary roller screw and products on the performance and life there are obvious disadvantages. So the further  research of the planetary roller screw must be quickened. In this study the static and dynamic characteristics of planetary roller screw are analyzed. Firstly, on the basis of analyzing the working principle of the planetary roller screw, the moving relationship between the main parts and the parameter design formula are deduced. Based on the theory of hertz contact , the contact characteristics of the planetary roller screw is  analyzed. And by using UG software to establish the three-dimensional model of the planetary roller screw. Secondly, based on the finite element method, the simplified equivalent model of planetary roller screw is established. The distribution of equivalent stress and total deformation of the screw thread is obtained by using ANSYS Workbench software on the statics analysis, and provides a method and theoretical basis to the research of the load-bearing characteristics. Free modal and three constraint modals finite element analysis were conducted on the planetary roller screw by Hyperworks software, and previous six order natural frequencies and vibration models are obtained. The results provide reference for the design of the screw pair and the entire transmission system. Finally, the contact force curve is obtained by using the ADAMS software to dynamics simulation and the results offer a new simulation method to static and dynamic characteristics analysis of the planetary roller screw. Statics analysis indicates that the trend of the equivalent stress and the displacement variation of the thread teeth is basically the same, both near the loading end, stress and deformation is bigger. Modal analysis results show that when two using end fixed, the natural frequencies of the planetary roller screw is higher, the maximum amplitude is relatively small and can withstand a higher speed. Dynamics simulation results show that contact force between roller and screw is bigger than that between roller and nut.