ブッシュ形防振ゴムのばね定数の推算法-1-絞り形の軸直角方向

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The present report is concerned with the spring constant of rubber bushes. Rubber bushes are applied widely on account of their smaller dimensions or larger spring constant than other types of rubber isolators.So it is necessary to determine their accurate spring constant theoretically. Many formulae concerning the calculation of the spring constant of rubber bushes have been reported, but those formulae do not agree well with the experiment, particularly in the case of radial spring constant.Authors, therefore, try to get an useful and accurate formulael of calculating radial spring constant by considering the deformation of free surface, where Maxwell-Betti′s equation is applicable and the form of a free sureface after drawing is approximated by half-ellipse or quarter-ellipse according to the original form.Experiments are carried out with rubber bushes of a constant volume by the resonance method, and it is found that the present formula has enough accuracy for practice. Furthermore the obtained theoretical results are summarized in diagrams.
日本ゴム協会の論文