The computational model of the load distribution between elements in a planetary roller screw

• Autorzy: Ryś J. , Lisowski F.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a computational model of the load distribution between elements in a planetary roller screw. The idea of the model is to consider the deformations of rolling elements as deformations of rectangular volumes subjected to shear stresses. The contact deformations of threads and the deformations of screw and nut cores are taken into account by a properly chosen shear modulus. This modulus is computed on the basis of stiffness determined using the finite element method. Based on the relation between displacements and forces differential equations are obtained. The solution to these equations is a hyperbolic function that illustrates the load distribution on the threads between cooperating elements. The following considerations are carried out to assess the suitability of the analytical model for the preliminary design and analysis of this type of transmissions.

Słowa kluczowe

EN

planetary roller screw; computational model; load distribution

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2014
• Tom: Vol. 52 nr 3
• Strony: 699--705
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Ryś J.

• Cracow University of Technology, Institute of Machine Design, Cracow, Poland

autor

Lisowski F.

• Cracow University of Technology, Institute of Machine Design, Cracow, Poland

Bibliografia

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• 6. Ryś J., 2012, The procedure of modification coefficients in planetary gears transmission, The Archive of Mechanical Engineering, LIX, 213-230
• 7. Sokolov P.A., Ryakhovskii O.A., Blinov D.S., Laptev A., 2005, Kinematics of planetary roller screw mechanisms, Vestnik Mashinostroeniya, 1, 3-14
• 8. Tselishchev A.S., Zharov I.S., 2008, Elastic elements in roller-screw mechanisms, Russian Engineering Research, 28, 11, 1040-1043
• 9. Velinsky S.A., Chu B., Lasky T.A., 2009, Kinematics and efficiency analysis of the planetary roller screw mechanism, Journal of Mechanical Design, 131, 1
• 10. Zhang X., Liu G., Ma S., Tong R., Luo H., 2012, Study on axial contact deformation of planetary roller screw, Applied Mechanics and Materials, 155/156, 779-783