パルス応答試験法による加硫ゴムの動的および衝撃的ばね定数の決定

概要

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By the method indicated in the attached instruction of JIS-K-6385, both the dynamic spring constant and the dynamic loss constant are well calculated for only the case where rubber vulcanizates are excited by a small magnitude of input, and these two constants lose their meaning for the case of exciting a large magnitude of input because of increasing the nonlinearity exhibited in the stress-strain curve.Bearing this fact in mind, in this paper, the authors determine the two constants mentioned above in the forms of dynamic or impulsive spring constant and of dynamic or impulsive loss constant respectively.The determination addopted here is based on the pulse-testing method, in which the input corresponds to the measured deflection and the output to the load. The impulsive spring constant and the impulsive loss constant are reasonably determined by the values at the excited frequency in the frequency characteristics obtained by the pulse testing method.Numerical results are also presented on the vibration test, including comparative discussion of dynamic constants with impulsive ones.
日本ゴム協会の論文