プラスチックボルトの引張衝撃試験法に関する研究 : 衝撃強度に及ぼす締結条件の影響

概要

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This paper presents the method for predicting the maximum axial force F_m of the bolt induced by tensile impact energy E_o under the various conditions of the bolted joint with plastics bolt. First, the influence of clamped member and initial tightening force on the F_m is investigated experimentally and prediction method that corrects the result of elementary test to a value corresponding to any given fastening condition is proposed. Second, the influence of different screw size and clamped length on the F_m is considered for the purpose of generalizing this method. As the result, obtained conclusions are summarized as follows : (1) Influence of the spring constant of practical clamped member on the F_m is negligible as compared with that of initial tightening force. (2) The proposed prediction method is applicable to the bolted joint with different screw size and clamped length by generalizing the F_m by stress and the E_o by impact energy per unit volume of the bolt.
1988-03-05