An experimental study of the stress-strain state of the engine piston skirt on the engineless stand

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Abstract


The article describes the features developed by the authors of the profiling method of the piston skirt, provides the main parameters that affect the lubrication conditions of the piston skirt and the magnitude of mechanical losses. In computational studies, the basic formulas are given for determining the thickness of the oil layer in a piston skirt - cylinder sleeve conjunction to assess the nature of friction. To determine the deformations, the finite element method is used on the spatial model of the piston. To verify the finite element model, a stand for experimental studies was developed. The article describes the developed stand, the methodology and results of experimental studies of the stress-strain state of the two-piece piston skirt obtained at this stand and a comparative analysis of the results of the calculated and experimental studies of the stress-strain state of the two-piece piston skirt of a diesel engine. The research results showed that the developed stand can be used to verify mathematical models for calculating the stress-strain state of the piston skirt in the pilot production of internal combustion engine pistons to accelerate and reduce the cost of the piston design development process, as well as the results of experimental studies obtained at the stand, can be used as initial data for the developed mathematical model of the dynamics of the movement of the piston and the profiling of the piston skirt.


About the authors

Sergei V. Smirnov

Peoples’ Friendship University of Russia (RUDN University)

Author for correspondence.
Email: smirnov-sv@rudn.ru
6 Miklukho-Maklaya St., Moscow, 117198, Russian Federation

Associate Professor at the Department of Mechanical Engineering and Instrument Engineering of Engineering Academy of RUDN University, Candidate of Technical Sciences

Vladimir V. Kopylov

Peoples’ Friendship University of Russia (RUDN University)

Email: smirnov-sv@rudn.ru
6 Miklukho-Maklaya St., Moscow, 117198, Russian Federation

Associate Professor at the Department of Mechanical Engineering and Instrument Engineering of Engineering Academy of RUDN University, Candidate of Technical Sciences

Alexander R. Makarov

Peoples’ Friendship University of Russia (RUDN University)

Email: smirnov-sv@rudn.ru
6 Miklukho-Maklaya St., Moscow, 117198, Russian Federation

Professor at the Department of Mechanical Engineering and Instrument Engineering of Engineering Academy of RUDN University, Candidate of Technical Sciences

Alexander A. Vorobyev

Peoples’ Friendship University of Russia (RUDN University)

Email: smirnov-sv@rudn.ru
6 Miklukho-Maklaya St., Moscow, 117198, Russian Federation

postgraduate student of the Department of Mechanical Engineering and Instrument Engineering of Engineering Academy of RUDN University

Kirill V. Shkarin

Peoples’ Friendship University of Russia (RUDN University)

Email: smirnov-sv@rudn.ru
6 Miklukho-Maklaya St., Moscow, 117198, Russian Federation

Assistant of Department of Mechanical and Instrument Engineering of Engineering Academy of RUDN University

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Copyright (c) 2019 Smirnov S.V., Kopylov V.V., Makarov A.R., Vorobyev A.A., Shkarin K.V.

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