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New Criteria for Self-Loosening of Fasteners Under Vibration
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English
Abstract
The theory of self-loosening of preloaded bolted connections when subjected to vibration is discussed. The significance of self-loosening as a cause of failure is explained, and design guidance to avoid self-loosening is given. The test methods are described and discussed in connection with a newly designed testing machine that yields quantitative data for evaluating locking properties. These methods can be applied to all types of locking elements. Finally, a simplified method for broad scale testing and inspection is proposed.
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Authors
Citation
Junker, G., "New Criteria for Self-Loosening of Fasteners Under Vibration," SAE Technical Paper 690055, 1969, https://doi.org/10.4271/690055.Also In
References
- Goodier J. N. Sweeney, R. J. “Loosening by Vibration of Threaded Fastenings,” Mechanical Engineering December 1945 798 802
- Sauer, J. A. Lemmon, D. C. Lynn, E. K. “Bolts-How to Prevent Their Loosening,” Machine Design August 1950 133 139
- Paland, E. G. “Untersuchungen über die Sicherungseigenschaften von Schraubenverbindungen bei dynamischer Belastung” Investigation of the Locking Features of Dynamically Loaded Bolted Connections Hannover 1966
- Junker G. Strelow D. “Untersuchungen über die Mechanik des selbsttätigen Lösens und die zweckmäBige Sicherung von Schraubenverbindungen” Investigation of the Mechanism of Self-Loosening and Optimal Locking of Bolted Connections
- Junker, G. “Betrachtungen über das selbsttätige Lösen und die zweckmäBige Sicherung von Schraubenverbindungen” (Aspects of Self-Loosening and Optimal Locking of Bolted Connections) Maschinenmarkt 72 1966 76
- Junker, G. “Warum lösen sich Schraubenverbindungen - wie kann man es verhindern?” (Why Fasteners Come Loose -and How to Prevent It) Industrie-Anzeiger 61 1967 19 22
- Junker G. Meyer, G. “Neuere Betrachtungen über die Haltbarkeit von dynamisch belasteten Schraubenverbindungen” (New Aspects on the Fatigue Behavior of Dynamically Loaded Bolted Joints) Draht-Welt, Fachbeilage Schrauben Muttern Formteile 54 1968 7 487 499
- Junker G. Blume, D. “Neue Wege einer system - atischen Schraubenberechnung” Modern Rules for Calculation of Bolted Connections Diisseldorf Triltsch 1965
- Junker, G. “Neue Prinzipien der Schraubenberechnung” (New Principles of Calculation for Bolted Connections) Maschinenmarkt 71 1965 74 16 29