Improvement of Tightening Torque and Initial Clamping Force on Bolted Joints by Elliptical Confidence Limit Method
信頼限界楕円法によるボルトの締付けトルクおよび初期締付け力分布の改善
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20224253
- Paper/Info type
- Journal of Society of Automotive Engineers of Japan
Vol.76 No.4
- Pages
- 56-62(Total 7 p)
- Date of publication
- Apr 2022
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | くるまは「ねじ」で出来ている Translation |
|---|---|
| Category(E) | Cars are made with Screws! |
| Author(J) | 1) 晴山 蒼一, 2) 真鍋 健一, 3) 小林 訓史 |
| Author(E) | 1) Soichi Hareyama, 2) Ken-ichi Manabe, 3) Satoshi Kobayashi |
| Affiliation(J) | 1) 東京都立大学, 2) 東京都立大学, 3) 東京都立大学 |
| Abstract(J) | ボルト締結は高い締付け力が必要である．締付け力はバラツキ菱形状に分布すると考えられていた．トルク法で締付けられたボルトの等価応力を確立統計的な分布として扱うと，締付けトルクと等価応力係数は、楕円状に分布することを導いた．この結果，小さなバラツキでより高い締付けトルクと初期締付力を得ることができた． Translation |
| Abstract(E) | It is important to give high initial axial tension in respect of tightening reliability. However, since this tension is indirect, it varies greatly in lot of tightening. It is thought that distribution of this kind is conventionally varied in a rhombus. In this paper, the statistical distribution of the magnitude of the equivalent stress which is tightened by the calibrated wrench method is formulated. Tightening torque and equivalent stress coefficient are considered to distribute in an elliptical confidence limit. Therefore, it is concluded that higher tightening torque and initial axial tension can be obtained with smaller variation than before. |
