はとめ加工の基礎的研究 : 第4報, ペタルフランジを用いた重ね継手の締結特性に及ぼす内縁寸法の影響

概要

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The present research deals with estimating the fastening characteristics of lap joint at varied the diameter of eyelet, and its comparison with already reported results. The following summarizes the experimental results; (1) Tensile destruction strength of the joint is not proportional to eyelet diameter which appeared the size effect. The cause of the size effect will differ depending on the geometorical shape and strain hardening at the staked region; (2) Tensile destruction strength of the joint is smaller than that of the lip flange, moreover, the fixed posision of petals under the staking is influenced considerably; (3) The size effect is similarly appeared in rotational strength of the joint, but the rotational strength to higher compared to that of the lip flange. Therefore, an effective staking method to increase the rotational strength; (4) The initial edge shape of eyelet is converted round into square by a press-fitting force increase, if preventing the growth of improperly phenomena still more the fastening characteristics is fairly improved.
一般社団法人日本機械学会の論文
1990-04-25