線材の横圧縮による変形抵抗測定の自動化

概要

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To measure the flow stress of rod or wire under forming conditions, i. e., at large strains, high strain rate and elevated temperature, a method based on the side compression test is proposed. In this method, plane-strain deformation is supposed and rod and wire are compressed between very rough tools on which grooves are made to the axial direction. The load and reduction in height measured in the test are converted into average flow stress and average equivalent strain by using the result of the rigid-plastic finite element method. This method is simple to carry out and is free form the effect of variation of frictional condition between the rod (wire) and the tools. Application of the method to continuous measurement of flow stress is investigated by compressing a part of wire. It is confirmed that the present method is suitable for determing flow stress-strain curve of rod and wire efficiently.
一般社団法人日本機械学会の論文
1988-08-25