2022-05-25T00:26:55Zhttps://nagoya.repo.nii.ac.jp/oaioai:nagoya.repo.nii.ac.jp:000056582021-03-01T20:23:58Z成長ひずみ法による円筒コイルばねの素線断面形状最適化解析Shape-Optimization Analysis for Wire Cross Sections of Cylindrically Coiled Spring by the Growth-Strain Method畔上, 秀幸Azegami, Hideyuki片峯, 英次Katamine, Eiji今泉, 敏幸Imaizumi, Toshiyuki沖津, 昭慶Okitsu, Akiyoshi日本機械学会Optimum DesignMachine ElementComputational MechanicsNumerical AnalysisFinite Element MethodOptimum cross sections of cylindrically coiled spring are analyzed by the growth-strain method. this method was previously proposed as a shape optimization method which deforms shapes by generating bulk strain. In the present analyses, the helix angle is neglected. The stress distributions are analyzed by the finite element method based on the stress function. The growth deformation is analyzed by the finite element method on the assumption of a roll of coil as a rotationally symmetric ring under free restriction. The bulk strain is generated based on the strain energy density in a manner in which volume change in the cross section is absorbed in the circuit direction. In consequence, a convergent curve of mass improvement ratio and corresponding cross sections are obtained. The cross sections are egg-shaped tapering to the outside of the coil.日本機械学会1990-11engjournal articlehttp://hdl.handle.net/2237/7263https://nagoya.repo.nii.ac.jp/records/56580387-5008日本機械学会論文集 A編5653123392346https://nagoya.repo.nii.ac.jp/record/5658/files/JSME-A56-2339.pdfapplication/pdf1.0 MB2018-02-19