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Chapter 21 Derivation of the Equation of Caustics for the Experimental Assessment of Distributed Contact Loads with Friction in Two Dimensions

机译:第21章二维分布的带摩擦接触载荷的实验评估的焦散方程的推导

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摘要

The stress-optical method of caustics is an experimental technique that can yield valuable data to assess the stress-state in the vicinity of a singularity such as the point at which a concentrated load acts or the tip of a static or a propagating crack. The present work aims to develop a mathematical background, which can be used to evaluate the complex shapes of the singular surfaces of the caustics produced from the Hertzian load distribution at the contact area between two sliding elastic bodies in order to derive the magnitude of the load and the prevailing mean coefficient of friction. The theoretical caustics are calculated numerically and plotted for various values of the coefficient of friction and experimental evidence supporting the validity of the analysis is given.
机译:应力光学法是一种实验技术,可以产生有价值的数据来评估奇异点附近的应力状态,例如集中载荷作用的点或静态裂纹或扩展裂纹的尖端。本工作旨在发展一个数学背景,该背景可用于评估由两个滑动弹性体之间的接触区域处的赫兹载荷分布产生的苛性碱奇异表面的复杂形状,以得出载荷的大小和普遍的平均摩擦系数。数值计算了理论焦散,并绘制了各种摩擦系数值,并提供了支持分析有效性的实验证据。

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  • 会议地点 Chania(GR)
  • 作者单位

    Department of General Science, Applied Mechanics Laboratory,Technical University of Crete, Greece,School of Mechanical Engineering, National Technical University of Athens, Athens,Greece;

    Faculty of Industrial Engineering, Technical University of Delft, The Netherlands;

    School of Applied Mathematics and Physical Sciences, Laboratory of Strength of Materials,National Technical University of Athens, Greece,School of Applied Mathematics and Physical Sciences, Laboratory of Strength of Materials,National Technical University of Athens, Greece;

    School of Mechanical Engineering, National Technical University of Athens, Athens,Greece;

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