Semi-analytical Modeling of the Influence of Macro Bending Effects on Micro Contact-Inhomogeneity Problems
作者机构：School of Mechanical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Key Laboratory of Road Construction Technology and Equipment of the Ministry of EducationChang’an UniversityXi’an 710064China Shaanxi Key Laboratory of Gear TransmissionsXi’an 710072China School of ScienceHarbin Institute of TechnologyShenzhen 518055China
出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)
年 卷 期：2023年第36卷第6期
页 面：860-874页
核心收录：
学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）]
基 金：support from the National Science and Technology Major Project(no.J2019-VII-0017-0159) the National Natural Science Foundation of China(no.52205048) support from the National Natural Science Foundation of China(no.52205192) Jinran Li would like to thank the China Scholarship Council(CSC)for its financial support(file no.201906290129)during his studies at Northwestern University as a visiting student
主 题：Contact analysis Bending effects Inhomogeneity Equivalent inclusion method Semi-analytical model
摘 要：This study examines the effects of macroscopic bending and microscopic contact loading in inhomogeneous materials using a semi-analytical model based on Eshelby’s equivalent inclusion *** model accounts for bending effects through the beam theory,with bending stress included in the Eshelby’s equivalent inclusion *** macroscopic displacement resulting from bending effects is incorporated into the microscopic contact solver,and the final displacement is determined using the conjugate gradient method in an iterative *** efficiency can be improved by incorporating the discrete convolution and fast Fourier *** core scheme is validated using the finite element method,yielding accurate and efficient results for bending-contact problems in inhomogeneous *** reveal the interplay between bending,contact loading,and inhomogeneity,as stress around the inhomogeneity alters and the stress concentration area expands under increasing bending ***,low-magnitude negative bending moments reduce both contact pressure and stress around the *** position where inhomogeneities are least affected shifts from the neutral surface depending on the coupling *** model provides a valuable bridge for connecting the macroscopic bending effect and microscale contact-inhomogeneity problems by visualizing stress fields and assessing pressure distributions.
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