Experimental simulation of rolling–sliding contact for application to planetary roller screw mechanism

Aurégan, Gilles; Fridrici, V.; Kapsa, Ph.; Rodrigues, F.

doi:10.1016/j.wear.2015.01.047

Cited by 61 publications

(29 citation statements)

References 16 publications

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“…In a PRSM, the linear velocities of the contact points are different between the rollers and the screw as well as between the rollers and the nut. 8 Accordingly, pure rolling can only occur along two lines of contact area. At other points along the contact, sliding must occur in a direction parallel to rolling motion.…”

Section: Heat Production In the Prsmmentioning

confidence: 99%

Thermo-mechanical coupling–based finite element analysis of the load distribution of planetary roller screw mechanism

Zhang

et al. 2018

Advances in Mechanical Engineering

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In this article, 3D or three-dimensional finite element analysis is used to simulate and evaluate the load distribution characteristics of a planetary roller screw mechanism under thermo-mechanical coupling. The finite element model takes into account the installation modes of the planetary roller screw mechanism, which is verified by comparison with theoretical models for a certain load magnitude in four installation modes. In addition, the effects of the installation mode, load magnitude, and temperature condition on the load distribution are also systematically analyzed. The numerical results reveal a phenomenon of threads separating from the meshing, which indicates that the influence of thermomechanical coupling on the load distribution cannot be ignored. Furthermore, the influence of the installation mode on the screw-roller interface is larger than that on the nut-roller interface. Compared with the screw-roller interface, the temperature difference is one of the main conditions affecting the load distribution of the planetary roller screw mechanism and has a significant effect on the nut-roller interface. In addition, the influences of the screw rotational speed and the load magnitude on the load distribution on the screw-roller interface are larger than those on the nut-roller interface for the four installation modes.

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Section: Heat Production In the Prsmmentioning

confidence: 99%

Thermo-mechanical coupling–based finite element analysis of the load distribution of planetary roller screw mechanism

Zhang

et al. 2018

Advances in Mechanical Engineering

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“…In recent years, there are many researches on PRSM, which are primarily focused on load distribution [1][2][3], parameter matching [4], friction and wear behaviours [5], axial stiffness [6][7] and kinematic analysis [8][9][10]. Instead, only few publications on the dynamic characteristic of the PRSM are mentioned.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Model of Planetary Roller Screw Mechanism with Considering Torsional Degree of Freedom

Wan

et al. 2020

MATEC Web Conf.

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To predict accurately the dynamics performance of planetary roller screw mechanism, it is necessary to establish its streamline and engineering-compliant dynamic model, which is the basis of mechanical design and precision control of the system. In this paper, the relative displacement between roller and ring gear along the line of action is deduced and the relationship between nature frequencies and the number of rollers is discussed. Considering the torsional stiffness of all components and the thread mesh stiffness based on the Hertzian contact theory, the purely torsional model for planetary roller screw mechanism is presented to reveal the natural frequencies and vibration mode characteristics of the system. The results show that the natural properties of undamped system in planetary roller screw mechanism are mainly reflected by two typical vibration modes: rotational mode and roller mode.

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“…Earlier work on PRSM has included research on the selection of structure parameters [2,3], kinematics and efficiency analysis [4][5][6], load distribution among threads [7][8][9], static and dynamic stiffness [10][11][12], transmission accuracy [13][14][15], lubrication and wear behaviour [16][17], manufacturing [18], dynamics [19][20], and thermal characteristics [21].…”

Section: Introductionmentioning

confidence: 99%

“…Besides, Auregan et al [16][17] developed a specific apparatus to reproduce a simplified version of the contact features of a PRSM. They performed the tests in dry friction conditions, and two damage modes were identified for sufficiently low shear stresses: abrasion and fatigue.…”

Section: Introductionmentioning

confidence: 99%

Contact Analysis and Static Load Carrying Capacity of Planetary Roller Screw Mechanism

Kim¹,

K²,

Jong³

2020

Preprint

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This paper aims to investigate the contact characteristics and static load carrying capacity of planetary roller screw mechanism (PRSM). Compared to the ball screw mechanism, the advantages of the PRSM are high stiffness, high load capacity, long travel life and compact structure, etc., since the PRSM possesses more contact points than ball screws in a comparable size. The actuated load is carried through the threaded surface contacts of the screw, the rollers and the nut and the contact characteristics of these components are very important for studying the wear, transmission accuracy and efficiency of a PRSM. Prior work has neglected to take a fundamental approach towards understanding the elastic-plastic contact characteristics of threaded surfaces under high loads and it is closely related to the static load carrying capacity of PRSM. Accordingly, in this paper, the contact characteristics of PRSM under the different working loads are modeled based on Hertz contact theory and the calculation formulas between normal force of thread turns and the elastic-plastic contact stress and deformation are derived. Then, it goes further to derive a calculation method of static load carrying capacity of PRSM based on simplified model of static load distribution. Finally, a verification model is developed by finite element method (FEM) to perform contact stress and strain analysis of PRSM. Besides, through the comparison of the results between the theory model and ANSYS Workbench finite element model verify the reliability of the theory.

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Experimental simulation of rolling–sliding contact for application to planetary roller screw mechanism

Cited by 61 publications

References 16 publications

Thermo-mechanical coupling–based finite element analysis of the load distribution of planetary roller screw mechanism

Thermo-mechanical coupling–based finite element analysis of the load distribution of planetary roller screw mechanism

Dynamic Model of Planetary Roller Screw Mechanism with Considering Torsional Degree of Freedom

Contact Analysis and Static Load Carrying Capacity of Planetary Roller Screw Mechanism

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