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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

NUMERICAL SIMULATION OF THERMAL LOAD CHARACTERISTICS OF FRICTION PAIRS IN HYDRO-VISCOUS DRIVE

Get access (open in a dialog) DOI: 10.1615/IHTC16.cms.021898
pages 1875-1882

Abstract

In order to study thermal load characteristics of friction pairs during soft start-up process and reveal the factors that affect the distributions of temperature field and stress field, three-dimensional models of thermal conduction analysis and thermoelastic analysis were developed by using finite element analysis software. The constitutive equations of thermoelastic stress were derived in detail and the thermo-mechanical coupling was considered fully. The indirect coupling numerical analysis method was adopted to predict the distributions of temperature and stress, in addition, the influence of material parameters and structural parameters on thermal behavior of friction pairs was analyzed. The research results show that the friction disk and steel disk are approximately similar in temperature field and stress field distributions, which first rise and then decline along the radial direction. It is found that the lower value of specific heat capacity results in higher rise of temperature and stress generated. The greater elasticity modulus and thermal expansion coefficient of material are, the greater the stress is. However, thermal conductivity and Poisson's ratio have a small impact on the distributions of temperature and stress. Increasing the thickness of steel disk is effective to reduce temperature and stress and improve the resistance to deformation, nevertheless, which will make the axial distance greater. When the ratio of inner and outer diameters is smaller, the steel disk is more prone to produce warping deformation. The analysis results provide certain theoretical reference for the selection of materials and determination of structural parameters for friction pairs.