超磁歪材を用いた磁気力制御素子における吸引力評価

概要

論文の詳細を見る
This paper addresses characteristics of magnetic force variation and variation ratio depending on a shape of giant magnetostrictive material(GMM)and a magnetic circuit. The force variation is based on the Villari effect that the magnetization of GMM varies with applied stress. This magnetic force control method will be expected to be applicable to magnetic actuators and have advantage such as high response, low heat generation and high-energy efficiency inherent in the characteristics of GMM. In this paper, through experiment using universal test machine was done and some useful results to design the magnetic circuit were obtained. Based on the result, magnetic force variation ratio was theoretically calculated by equivalent magnetic circuit. A agreement with claculated and experiment result confirmed validity of the formulation. The relationships between the strain, stress and magnetic flux were also measured and necessity of total magnetic circuit design has been cleared.
一般社団法人日本機械学会の論文
2000-08-25