Gear tooth wear in sintered spur gears under dry running conditions
TL;DR: In this article, a wear prediction methodology for spur gears is employed to investigate the influence of material properties on gear tooth wear under unlubricated conditions, and a MATLAB program is developed to account the changes in the gear contact per mesh cycle as the wear occurs.
About: This article is published in Wear.The article was published on 2008-06-25. It has received 44 citations till now. The article focuses on the topics: Tooth surface & Tooth wear.
Citations
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TL;DR: In this article, a review of the literature about self-lubricating metallic composites containing MoS2 is presented, in particular those analyzing the possible reactions during processing, which are often neglected or even unknown in a variety of publications.
169 citations
TL;DR: In this article, a dynamic wear prediction methodology is proposed to investigate the coupling effects between surface wear and dynamics of spur gear systems, which combines a quasi-static wear model and a translational-rotational-coupled nonlinear dynamic model.
89 citations
TL;DR: In this article, a nonlinear tribo-dynamic model of spur gear drives is established and experimentally validated in a helicopter design to improve survivability, when the gear drive loses lubrication due to battle damage.
58 citations
TL;DR: In this article, a gear wear monitoring and prediction approach through the integration of a dynamic model, to simulate the dynamic responses of the gear system; two tribological models, to estimate wear depth and pitting density (on the gear surface); and model updating, by comparing simulated and measured vibration signals.
54 citations
TL;DR: In this article , the authors conduct a comprehensive review on vibration-based gear wear monitoring, including studying the gear surface features caused by different gear wear mechanisms, investigating the relationships between gear surface feature and vibration characteristics, and summarizing the current research progress of vibration-aware gear wear detection and prediction.
49 citations
References
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TL;DR: In this paper, a numerical model for wear prediction of spur gears is developed, based on a generalized Archard's wear equation, and the running conditions for gear tooth surfaces are modeled by Winkler's elastic foundation model.
229 citations
TL;DR: In this paper, a wear model that defines geometric description of contacting gear tooth surfaces having wear and a deformable-body dynamic model of a planetary gear set is employed to study the influence of surface wear on the dynamic behavior of typical planetary gear sets.
163 citations
TL;DR: In this paper, a numerical prediction on pitting formation is carried out in spur gear made from austempered ductile iron, where general two-dimensional rolling sliding contact situations are considered for the development of the analytical model.
109 citations
TL;DR: In this article, the stiffness of a single spur gear tooth is analyzed theoretically, and due to the difficulties in measuring the gear tooth stiffness, an experimental procedure based on the modal analysis is developed to assess the severity of the gear teeth damage.
Abstract: Due to excessive service load, inappropriate operating conditions or simply end of life fatigue, damage can occur in gears. When a fault, either distributed or localised, is incurred by gears, the stiffness and consequently vibration characteristics of the damaged tooth will change. A possible non-destructive technique for damage detection and severity assessment can be derived from vibration analysis. This paper presents the use of vibration analysis in the detection, quantification, and advancement monitoring of damage incurred by spur gear teeth. The stiffness of a single spur gear tooth is analysed theoretically, and due to the difficulties in measuring the gear tooth stiffness, an experimental procedure based on the modal analysis is developed to assess the severity of the gear tooth damage. A pair of spur gears was tested under accelerated wear conditions, and conventional time and frequency domain techniques are applied to the gear vibrations to indicate the presence and progression of the wear. The developed modal stiffness assessment technique is then used to quantify the resulting wear damage to the spur gear teeth.
87 citations
TL;DR: In this article, a mixed finite element (FE) and analytical approach is used to determine contact loads between the interacting gear teeth, and the wear of a point on a tooth flank is determined by integrating the product of sliding distance and contact pressure during the time it is in contact with its mating flank.
82 citations