When contact pressure and surface lower stress calculation mannered calculation device null outer forces

摘要

PROBLEM TO BE SOLVED: To provide a method capable of calculating contact surface pressure and subsurface stress under conformal contact in a relatively short period of time and with accuracy without using finite element method or boundary element method.;SOLUTION: A reference curved surface S is set between two contacting objects M1, M2 and is divided into a mesh where cells are arranged vertically and horizontally. Calculation points for discretely calculating the distance between the contacting objects M1, M2 are defined on the cells. The amount of influence that a point corresponding to each calculation point on the surfaces of the contacting objects M1, M2 has on displacement when a distributed load acts on each cell is calculated. The surface pressure of each cell is calculated using balancing conditional expressions that require that the total of the products of the surface pressures and the amounts of influences of the cells balance a difference between the amount that the contacting objects approach each other and an initial gap between them, and that the total of the surface pressures of the cells balance an external force. In a process for calculating the influence of the displacement and a process for calculating contact surface pressure, the distance over the reference curved surface is used in the calculation of the distance between measuring points, and surface pressure is calculated by making a correction to a normal direction on the basis of a difference in position on the reference curved surface.;COPYRIGHT: (C)2009,JPO&INPIT