期刊论文

Elastic - plastic Contact Analysis of the Planetary Roller Screw Mechanism

中文

机械传动

Journal of Mechanical Transmission

1006-0316

2016

40

11

106-110,116

10.16578/j.issn.1004.2539.2016.11.031

国家自然科学基金(51275423)； 教育部高等学校博士学科点专项科研基金(20126102110019)； 中国博士后科学基金(2014M552483)；

本校为其他机构

针对行星滚柱丝杠副弹塑性接触问题,以赫兹接触理论及弹塑性力学为基础,建立了丝杠与滚柱单对接触模型,得出一种判断行星滚柱丝杠副是否进入屈服状态的方法。其次,基于有限元法建立其弹塑性接触的数值模型,分析了载荷与行星滚柱丝杠副弹塑性接触变形的关系。进一步的计算表明,滚柱先于丝杠屈服,且在塑性变形量较小的载荷范围内,运用赫兹公式计算接触应力仍然可行。通过对行星滚柱丝杠副的弹塑性接触分析,得出其额定静载荷对应的塑性变形量,对未来行星滚柱丝杠副的设计提供了理论依据。

Aiming at elastic - plastic contact of planetary roller screw mechanism （ PRSM）, a single contact model between screw and roller is established based on the Hertz contact theory and elastic - plastic mechanics, then a method for judging whether the PRSM has entered the yield state is obtained. Secondly, the nu- merical model of the elastic - plastic contact is built based on the finite element method and the relationship be- tween loads and deformation on the elastic - plastic contact of PRSM is analyzed. Conclusions can be drawn that the rol...