Approximate contact solutions for non-axisymmetric homogeneous and power-law graded elastic bodies:A practical tool for design engineers and tribologists  

作　　者：Valentin L.POPOV Qiang LI Emanuel WILLERT 

机构地区：[1]Institute of Mechanics,Technische Universität Berlin,Berlin 10623,Germany

出　　处：《Friction》2024年第2期340-355,共16页摩擦（英文版）

基　　金：financial support from Deutsche Forschungsgemeinschaft(DFG)(Grant Nos.PO 810/66-1 and LI 3064/2-1)。

摘　　要：In two recent papers,approximate solutions for compact non-axisymmetric contact problems of homogeneous and power-law graded elastic bodies have been suggested,which provide explicit analytical relations for the force–approach relation,the size and the shape of the contact area,as well as for the pressure distribution therein.These solutions were derived for profiles,which only slightly deviate from the axisymmetric shape.In the present paper,they undergo an extensive testing and validation by comparison of solutions with a great variety of profile shapes with numerical solutions obtained by the fast Fourier transform(FFT)-assisted boundary element method(BEM).Examples are given with quite significant deviations from axial symmetry and show surprisingly good agreement with numerical solutions.

关 键 词：normal contact non-axisymmetric indenter extremal principle generalized method of dimensionality reduction(MDR) functional elastic grading 

分 类 号：O24[理学—计算数学]