光弾性画像による任意直角座標系上の応力自動解析算法

概要

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In spite of a number of attempts to develop an automatic system of photoelastic stress analysis with a microcomputer, there still exist several difficulties in accurate treatment of digital image data. In this paper, the authors describe a new theory and its application regarding the automatic calculation of stress components on an appropriates Cartesian coordinate from several photoelastic images, using a microcomputer. Two new concepts, namely, 1) the local polynomial expression of Airy's stress function, and 2) the relativity of boundary values, are proposed here, in addition to the well-known equations of the light intensity in photoelasticity and the coordinate transformation of stress components. Based on the above concepts, the expression of each stress component using spline functions on a Cartesian coordinate is easily calculated by the least squares method. An application of this method shows much better accuracy of analysis which is unaffected by generation and propagation of errors, in comparison with the former methods published to date.
一般社団法人日本機械学会の論文
1990-10-25