Multi-objective optimization of planetary roller screw mechanism based on improved mathematical modelling

Qin Yao; Mengchuang Zhang; Yongshou Liu; Shangjun Ma

doi:10.1016/j.triboint.2021.107095

Multi-objective optimization of planetary roller screw mechanism based on improved mathematical modelling

Qin Yao, Mengchuang Zhang, Yongshou Liu, Shangjun Ma

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

The optimization of obtaining the most uniform load distribution is important for the load carrying capacity design of the planetary roller screw mechanism (PRSM). However, the stiffness matrix of PRSM in traditional method based on the relationship between load and deformation of the thread may be destroyed when threads are no longer in contact due to machining errors, which would bring convergence problem in optimization process. In this paper, the mathematical model is firstly established to overcome the above drawbacks by proposing an improved iterative algorithm. Then, the multi-objective optimization is conducted to search the best designed pitches for the most uniform load distribution on both the screw-roller and nut-roller interfaces, and results are verified by the finite element method.

Original language	English
Article number	107095
Journal	Tribology International
Volume	161
DOIs	https://doi.org/10.1016/j.triboint.2021.107095
State	Published - Sep 2021

Keywords

Improved iteration algorithm
Load distribution
Multi-objective optimization
Planetary roller screw mechanism

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10.1016/j.triboint.2021.107095

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title = "Multi-objective optimization of planetary roller screw mechanism based on improved mathematical modelling",

abstract = "The optimization of obtaining the most uniform load distribution is important for the load carrying capacity design of the planetary roller screw mechanism (PRSM). However, the stiffness matrix of PRSM in traditional method based on the relationship between load and deformation of the thread may be destroyed when threads are no longer in contact due to machining errors, which would bring convergence problem in optimization process. In this paper, the mathematical model is firstly established to overcome the above drawbacks by proposing an improved iterative algorithm. Then, the multi-objective optimization is conducted to search the best designed pitches for the most uniform load distribution on both the screw-roller and nut-roller interfaces, and results are verified by the finite element method.",

keywords = "Improved iteration algorithm, Load distribution, Multi-objective optimization, Planetary roller screw mechanism",

author = "Qin Yao and Mengchuang Zhang and Yongshou Liu and Shangjun Ma",

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year = "2021",

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AU - Yao, Qin

AU - Zhang, Mengchuang

AU - Liu, Yongshou

AU - Ma, Shangjun

PY - 2021/9

Y1 - 2021/9

N2 - The optimization of obtaining the most uniform load distribution is important for the load carrying capacity design of the planetary roller screw mechanism (PRSM). However, the stiffness matrix of PRSM in traditional method based on the relationship between load and deformation of the thread may be destroyed when threads are no longer in contact due to machining errors, which would bring convergence problem in optimization process. In this paper, the mathematical model is firstly established to overcome the above drawbacks by proposing an improved iterative algorithm. Then, the multi-objective optimization is conducted to search the best designed pitches for the most uniform load distribution on both the screw-roller and nut-roller interfaces, and results are verified by the finite element method.

AB - The optimization of obtaining the most uniform load distribution is important for the load carrying capacity design of the planetary roller screw mechanism (PRSM). However, the stiffness matrix of PRSM in traditional method based on the relationship between load and deformation of the thread may be destroyed when threads are no longer in contact due to machining errors, which would bring convergence problem in optimization process. In this paper, the mathematical model is firstly established to overcome the above drawbacks by proposing an improved iterative algorithm. Then, the multi-objective optimization is conducted to search the best designed pitches for the most uniform load distribution on both the screw-roller and nut-roller interfaces, and results are verified by the finite element method.

KW - Improved iteration algorithm

KW - Load distribution

KW - Multi-objective optimization

KW - Planetary roller screw mechanism

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DO - 10.1016/j.triboint.2021.107095

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SN - 0301-679X

VL - 161

JO - Tribology International

JF - Tribology International

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ER -

Multi-objective optimization of planetary roller screw mechanism based on improved mathematical modelling

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Keywords

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