A multi-roller static model of the planetary roller screw mechanism considering load sharing

Xiaojun Fu; Xin Li; Shangjun Ma; David Gerada; Geng Liu; Christopher Gerada

doi:10.1016/j.triboint.2022.107648

A multi-roller static model of the planetary roller screw mechanism considering load sharing

Xiaojun Fu, Xin Li, Shangjun Ma, David Gerada, Geng Liu, Christopher Gerada

Research output: Journal Publication › Article › peer-review

11 Citations (Scopus)

Abstract

A multi-roller static model is proposed to calculate load sharing and load distribution in a planetary roller screw mechanism (PRSM) with axial loads and errors. Taking into the actual positions of rollers, the PRSM is discretized into a multi-roller spring system. The proposed model is validated by comparing the results from a finite element model. The load sharing, load distribution and elastic deformation behaviors of a PRSM under different part position errors and thread index errors are analyzed. The results show that load sharing is sensitive to the position errors of the screw and nut while being fairly insensitive to those of rollers. Part position errors and thread index errors have a great influence on the stiffness of the PRSM.

Original language	English
Article number	107648
Journal	Tribology International
Volume	173
DOIs	https://doi.org/10.1016/j.triboint.2022.107648
Publication status	Published - Sept 2022
Externally published	Yes

Keywords

Axial clearance
Elastic deformation
Load sharing
Planetary roller screw mechanism

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.triboint.2022.107648

Cite this

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title = "A multi-roller static model of the planetary roller screw mechanism considering load sharing",

abstract = "A multi-roller static model is proposed to calculate load sharing and load distribution in a planetary roller screw mechanism (PRSM) with axial loads and errors. Taking into the actual positions of rollers, the PRSM is discretized into a multi-roller spring system. The proposed model is validated by comparing the results from a finite element model. The load sharing, load distribution and elastic deformation behaviors of a PRSM under different part position errors and thread index errors are analyzed. The results show that load sharing is sensitive to the position errors of the screw and nut while being fairly insensitive to those of rollers. Part position errors and thread index errors have a great influence on the stiffness of the PRSM.",

keywords = "Axial clearance, Elastic deformation, Load sharing, Planetary roller screw mechanism",

author = "Xiaojun Fu and Xin Li and Shangjun Ma and David Gerada and Geng Liu and Christopher Gerada",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

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doi = "10.1016/j.triboint.2022.107648",

language = "English",

volume = "173",

journal = "Tribology International",

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T1 - A multi-roller static model of the planetary roller screw mechanism considering load sharing

AU - Fu, Xiaojun

AU - Li, Xin

AU - Ma, Shangjun

AU - Gerada, David

AU - Liu, Geng

AU - Gerada, Christopher

PY - 2022/9

Y1 - 2022/9

N2 - A multi-roller static model is proposed to calculate load sharing and load distribution in a planetary roller screw mechanism (PRSM) with axial loads and errors. Taking into the actual positions of rollers, the PRSM is discretized into a multi-roller spring system. The proposed model is validated by comparing the results from a finite element model. The load sharing, load distribution and elastic deformation behaviors of a PRSM under different part position errors and thread index errors are analyzed. The results show that load sharing is sensitive to the position errors of the screw and nut while being fairly insensitive to those of rollers. Part position errors and thread index errors have a great influence on the stiffness of the PRSM.

AB - A multi-roller static model is proposed to calculate load sharing and load distribution in a planetary roller screw mechanism (PRSM) with axial loads and errors. Taking into the actual positions of rollers, the PRSM is discretized into a multi-roller spring system. The proposed model is validated by comparing the results from a finite element model. The load sharing, load distribution and elastic deformation behaviors of a PRSM under different part position errors and thread index errors are analyzed. The results show that load sharing is sensitive to the position errors of the screw and nut while being fairly insensitive to those of rollers. Part position errors and thread index errors have a great influence on the stiffness of the PRSM.

KW - Axial clearance

KW - Elastic deformation

KW - Load sharing

KW - Planetary roller screw mechanism

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DO - 10.1016/j.triboint.2022.107648

M3 - Article

AN - SCOPUS:85131136402

SN - 0301-679X

VL - 173

JO - Tribology International

JF - Tribology International

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ER -

A multi-roller static model of the planetary roller screw mechanism considering load sharing

Abstract

Keywords

ASJC Scopus subject areas

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