正交各向异性涂层/各向同性基材体系的无摩擦接触力学

IF 2.9 4区 工程技术 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
Erdal Öner
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引用次数: 2

摘要

本研究旨在研究一种均匀的正交各向异性涂层的后退接触问题,这种涂层没有与均匀的各向同性基底结合,没有任何界面缺陷。各向同性衬底支承在温克勒基础上。假设刚性凸模与各向异性涂层之间、各向异性涂层与各向同性基体之间的接触是无摩擦的,则该问题得以解决。此外,忽略了体力的影响,只有压缩的法向牵引力可以通过界面传递。正交各向异性涂层在平面应变条件下受到刚性圆柱冲床的接触载荷,进行了接触分析。利用弹性理论和傅立叶积分变换技术对控制方程进行了解析求解。然后,将控制方程简化为两个奇异方程组,其中未知量为接触应力和接触宽度。采用高斯-切比雪夫积分公式对奇异积分方程进行数值求解。分析了正交异性材料性能、冲孔半径、载荷比、温克勒基础刚度等参数对接触应力和接触宽度的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Frictionless contact mechanics of an orthotropic coating/isotropic substrate system
This study has been performed to investigate the receding contact problem of a homogeneous orthotropic coating that is not bonded to a homogeneous isotropic substrate without any interfacial defects. The isotropic substrate is supported on a Winkler foundation. The problem is solved assuming that the contact between the rigid punch and orthotropic coating, and that between the orthotropic coating and isotropic substrate, are frictionless. Additionally, the effect of the body forces is neglected, and only compressive normal tractions can be transmitted through the interfaces. The contact analysis of the orthotropic coating, which is subjected to a contact load using a rigid cylindrical punch, is performed under plane strain conditions. The governing equations are analytically found using the theory of elasticity and Fourier integral transformation techniques. Subsequently, the governing equations are reduced to a system of two singular equations, wherein the unknowns are the contact stresses and contact widths. To numerically solve the resulting singular integral equations, Gauss-Chebyshev integration formulas are employed. It is analyzed the influence of the following parameters on the contact stresses and contact widths: orthotropicmaterial properties, punch radius, load ratio, Winkler foundation stiffness.
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来源期刊
Computers and Concrete
Computers and Concrete 工程技术-材料科学:表征与测试
CiteScore
8.60
自引率
7.30%
发文量
0
审稿时长
13.5 months
期刊介绍: Computers and Concrete is An International Journal that focuses on the computer applications in be considered suitable for publication in the journal. The journal covers the topics related to computational mechanics of concrete and modeling of concrete structures including plasticity fracture mechanics creep thermo-mechanics dynamic effects reliability and safety concepts automated design procedures stochastic mechanics performance under extreme conditions.
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