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Point contact EHL fast iterative algorithm directly

Author: LiYing
Tutor: XiaBoQian
School: Zhengzhou University
Course: Mechanical Design and Theory
Keywords: Elastic contact Point contact elastohydrodynamic lubrication Iterative scheme Numerical algorithms
CLC: TH117.2
Type: Master's thesis
Year: 2008
Downloads: 31
Quote: 2
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Abstract


This article by any elastomer contact problem of the numerical algorithm research and point contact the elastohydrodynamic lubrication numerical algorithm consists of two parts . In the first part , a fast new algorithm for solving any flexible surface contact problem . Based on the influence coefficient method the Boussinesq semi- infinite physical deformation relationship and structure analysis , the unknown pressure is composed of linear equations , the use of block iterative method for solving large - scale linear equations , the reduced-order equations and to ensure that the value the stability of the solution process ; further , into a sparse band matrix the full yuan matrix by contact pressure iteration matrix significantly improve computational efficiency and accuracy . Data experiments show that , when the the the iterative matrix density for the full array of 15% to 20% , the new algorithm with satisfactory results . The algorithm is not only the surface contact problems of classical elasticity improved numerical algorithm , at the same time laying the foundation for later in this article . The second part of the study point contact elastohydrodynamic lubrication problems fast numerical algorithm . Composite direct iteration method based on a new iteration point contact EHL problem solving format , based on the format of the iterative computer program on several isothermal conditions point contact EHL preparation the calculation, the typical characteristics of the point contact EHL problem , proved the correctness and reliability of the new algorithm . The contrast with the the composite direct iteration method show that the new algorithm of this paper is not only a good calculation accuracy , and can significantly improve computational efficiency and load range . This paper a new algorithm composite iterative method is an important improvement and development, but also the non - steady-state point contact EHL problem laying a new base

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanics (mechanical design of the basic theory ) > Mechanical friction, wear and lubrication > Lubricating
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