Abstract
A new numerical method for constructing a pressure distribution to calculate surface elastic deformation caused by normal contact pressure is developed in this paper. The pressure distribution over one of nonequidistant rectangles is fitted by an approximate tangent plane(ATP), which is formed by five pressure samples. Because the pressure distribution could be expressed as an one order linear polynomial, the iterative expression of elastic deformation deduced by this method is simple, and the numerical accuracy is higher.
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