線形粘弾性特性係数関数の実用的近似法

概要

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A new Prony series approximation technique that can determine the coefficients involved in relaxation function in high accuracy is developed. The technique can be applied to various loading conditions because of the principle based on the incremental method. In addition, every coefficient keeps positive value and satisfies smoothness of relaxation spectrum. In order to verify the effectiveness of the proposed technique, the authors obtained a relaxation modulus data by relaxation test, then determined the coefficients of relaxation modulus function. Also, the storage and loss moduli calculated by the technique showed good agreement with data measured by dynamic test. In addition, it is confirmed that the proposed technique can automatically predict and compensate data in high reliability by a smoothing algorithm which can not be measured.
社団法人日本機械学会の論文
2006-11-25