Abstract
In order to optimize the algorithm on contact pressure and interference magnitude of multi-layer interference cylinders, the effects of centrifugal force and temperature gradient on the performance of multi-layer interference cylinders are considered. The mathematical matrix model of contact pressure and interference magnitude of multi-layer interference cylinder is constructed under centrifugal force and temperature gradient. Four kinds of interference cylinder models are established, and the numerical solutions using finite element methods are compared with the analytical solutions. The results show that the contact pressure of each contact surface of multi-layer interference cylinder decreases with speed increase; the slip rate of contact pressure increases with speed increase; the maximum radial displacement of an interference cylinder under centrifugal force occurs at the outermost layer. The contact pressure of a multi-layer interference cylinder decreases linearly with the increase of temperature gradient. The analytical solution is basically consistent with the numerical solution, and the maximum relative error of midpoint is 11.62% and −7.69% under two factors. It means that the algorithm can provide a theoretical guide for the design of a multi-layer interference cylinder considering centrifugal force and temperature gradient.
Highlights
The interference fit has the advantages of simple structure, good neutrality, strong load-carrying capacity, good impact resistance, and so on, so it has a wide application in mechanical engineering [1].Many scholars have done a lot of research on the algorithm and influence of interference fit
(1) aThe matrix models of the relationship between contact pressure and interference multi-layer interference cylinder under centrifugal force and temperaturemagnitude gradient of area multi-layer interference under andtheory
Temperature gradient are deduced deduced based on elasticcylinder mechanics andcentrifugal thick-wall force cylinder based on elastic mechanics and thick-wall cylinder theory
Summary
The interference fit has the advantages of simple structure, good neutrality, strong load-carrying capacity, good impact resistance, and so on, so it has a wide application in mechanical engineering [1]. The 1), effects of centrifugal force temperature gradient low-speed interference coupling of cylinder wind turbine Four kinds of interference cylinder models areforce builtand to pressure interference magnitude of multi-layer interference cylinder under centrifugal respectively of centrifugal force and temperature gradient thetoperformance temperatureanalyze gradientthe is influence derived. By and comparing the gradient calculation results of the finite element analyze the influence of centrifugal force temperature on the performance of multi-layer numerical method and method, some conclusions multi-layer interference cylinder interference cylinder. Between Ci and Ci 1 , a matrix model of multi-layer interference cylinder can be obtained as: According the radial displacement of contact surface of According to to Equation.
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