Development of anti-loosening performance of hyper lock nut (1st report, elasto-plastic analysis by three-dimensional finite element method)

被引：0

作者：

Nishiyama, Shuji ^{[1
]}

Migita, Hiroaki ^{[1
]}

Kataoka, Mitumasa ^{[1
]}

Nakasaki, Nobuyuki ^{[1
]}

Murano, Kohshi ^{[1
]}

机构：

[1] Department of Systems Engineering for Sports, Faculty of Computer Science and System Engineering, Okayama Prefectural University, Soja shi, Okayama, 719-1197

来源：

Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C | 2007年 / 73卷 / 03期

关键词：

Bolted joint; Elasto-plastic analysis; Finite element method; Fracture mechanics; Machine element;

D O I：

10.1299/kikaic.73.841

中图分类号：

学科分类号：

摘要：

Bolted joints are widely used in mechanical structures since the disassembly for maintenance is easy without high cost. However, vibration induced loosing due to dynamic loading has been unsolved subject for a long time. We have developed a new type of nut named 'hyper lock nut (HLN), which realizes anti-loosening performance without complicated tightening process and tool. In this study, we have investigated the mechanisms of bolted joint with HLN, and tightening behavior are analyzed by mean of three-dimensional finite element method. Results are compared with the experimental results for HLN. Good qualitative agreement is observed between analytical results and experiments with respect to displacement, tightening force and tightening torque. We found some new aspects and superior points for bolted-joint with HLN than that of standard nuts. It is found that tightening torque of HLN is higher than that of standard. It is also found that the anti-loosening performance can be realized by the thread contact force at the slit region and angular facing on bearing surface. Moreover, by mean of tensile and fatigue experiments, it is concluded that HLN involves sufficient strength in practical use.

引用

页码：841 / 848

页数：7

共 8 条

[1] Yamamoto A., Theory and Calculation of Bolted Joints, pp. 39-53, (1992)
[2] Yamamoto A., Principle and Design of Bolted Joints, pp. 30-140, (2004)
[3] Migita H., Nut A., Patent, pp. 2005-010412
[4] Migita H., Nut A., Patent
[5] Izumi S., Et al., Three-dimensional Finite Element Analysis on Tightening and Loosening Mechanism of Bolted Joint, Transactions of the Japan Society of Mechanical Engineers, Series C, 71, 702, pp. 204-212, (2005)
[6] Izumi S., Et al., Verification of Anti-Loosening Performance of Super Slit Nut by Finite Element Method, Transactions of the Japan Society of Mechanical Engineers, Series C, 71, 703, pp. 380-386, (2005)
[7] Fukuoka T., Mechanism and Tightening, SCIENCE OF MACHINE, 54, 2, pp. 289-295, (2002)
[8] Okada M., Et al., A study on Bearing Surface Pressure Distribution of Bolted Joints (Influence of Angular Deviation of Bearing Surface), Transactions of the Japan Society of Mechanical Engineers, Series C, 70, 699, pp. 3324-3330, (2004)

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