著者
田中 伸司 吉冨 雄二
出版者
一般社団法人 日本機械学会
雑誌
日本機械学会論文集C編 (ISSN:18848354)
巻号頁・発行日
vol.78, no.794, pp.3615-3629, 2012 (Released:2012-10-25)
参考文献数
23

This study aims definition of complex phenomena arising under screw thread fastening process and deep understanding of past relevant knowledge. So far, authors have been studied on screw fastening mechanism of a clamped body with M10 bolt-nut by using 3D elastoplastic FE analysis. In this paper, more precise analytical model is developed and the bolt-nut fastening process is calculated. Consequently, following matters were revealed. (a) Greatly complicated deformation of bolt-nut joined threads area under contacting was clarified qualitatively. Supporting contribution percentages of each thread to axial load was calculated; especially the first thread of joining screw thread supported about 31% of axial force. (b) Spring constant of bolt-nut or clamped part calculated by the present FEM was well accorded with some theoretical equations within 7% error. Contribution of elongation of each region with the bolt also agreed with these equations. Most of all, the validity of Sawa-Maruyama's equation was showed. (c) During fastening process, development of stress or strain at the bolted joint was visualized compatibly alongside of past knowledge and information.

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外部データベース (DOI)

Yahoo!知恵袋 (1 users, 1 posts)

その考え方は正しいです。 類似の例で、ねじ締めで起きる現象で判ります。 ねじ締結体の締付け過程における変形挙動解析 https://www.jstage.jst.go.jp/article/kikaic/78/794/78_3615/_pdf 3・2・1 被締結材の変形 Fig.7 Fig.8 のようにΦ25厚さ12.5を二段に 重ねて穴にM10のボルトを通し、ナ ...

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沢・丸山の式(締結ボルトのボルト側引張ばね定数)で、分母にAが4つ出てくるのだが、参考にしている図書だとAは3種類だが、1つイコールにして2種類にしている。この文献を見るとそもそも2種類。差は何なんだろうか・・・。https://t.co/rsnVGYAV4l

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