中文摘要：

行星滚柱丝杠副具有承载能力大、环境适应性好、寿命长等优点。行星滚柱丝杠副的承载特性主要包括各啮合传力零件的受力分析、轴向变形、螺纹牙载荷分布、滚柱间载荷分配及摩擦磨损特性等。它既是揭示其服役过程中载荷传递、结构变形以及摩擦磨损等机理的重要途径,也是进一步提高行星滚柱丝杠副传动性能和使用寿命的理论基础。首先介绍了行星滚柱丝杠副承载原理,在此基础上说明承载特性各项研究的主要内容及意义,并对目前研究成果进行了总结与分析。最后,对行星滚柱丝杠副承载特性的未来研究方向进行了展望。

英文摘要：

Planetary roller screw mechanism （PRSM） has a lot of advantages such as high load, fine environmental adaptability, long life, et al. Load bearing characteristics of PRSM mainly include the analysis of mechanics of elements, axial deformation, load distribution over threads, load share among rollers, friction moment and wear. Research on load bearing characteristics aims to reveal the mechanisation of load transfer, deformation of components and wear of threads, and is the way to further improve its transmission performance and service life. In this paper, the load bearing principle of PRSM is introduced, and on the basis of it, the main achievements on load bearing characteristics are summarized. Finally, some suggestions are presented for future research on load bearing characteristics of PRSM.