円筒コイルばねの素線断面形状の最適化 : 第2報, コイル曲率が大きい場合の最適断面形状の検討

概要

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This paper presents a detailed discussion of the shape of the wire cross section of a helical spring that has the minimum weight under specified characteristics of a helical spring, especially where the coil curvature is large, Stress in the helical spring is calculated by the finite element method based on the stress function. The optimization problem is solved by the steepest descent mothod whose adequacy was confirmed in the previous paper. As a result, (1) it is assumed that many design points whose weights are almost equal to that of the global optimum exist around the global optimum point because stresses around the periphery of the wire cross section cannot be made uniform in the case of large coil curvature: (2) the converged solutions obtained from various initial shapes slightly differ in shape from one another, but are almost equal in weight; and (3) the converged solutions are not local minima, but are assumed to be located near the global minimum point in the design space.
一般社団法人日本機械学会の論文
1991-05-25