A realistic dynamic model for gear fault diagnosis

被引:39
作者
Dadon, I. [1 ]
Koren, N. [1 ]
Klein, R. [2 ]
Bortman, J. [1 ]
机构
[1] Ben Gurion Univ Negev, Dept Mech Engn, PHM Lab, POB 653, IL-8410501 Beer Sheva, Israel
[2] RK Diagnost, POB 101, IL-20103 Gilon, Dn Misgav, Israel
关键词
Gear model; Tooth face fault; Gear diagnostics; Vibration; Condition monitoring; SPUR GEAR; NONLINEAR DYNAMICS; TRANSMISSION; STIFFNESS; SYSTEM; CRACK; DEVIATIONS; SIMULATION;
D O I
10.1016/j.engfailanal.2017.10.012
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
A reliable dynamic model that predicts the vibrations of a gear transmission containing a fault may allow us to recognize the effects of that fault, to identify its severity, and to develop methods for characterizing its type by using a limited number of experiments. In this research, a new generic model for gear dynamics is proposed. This model is solved numerically, and combines the most advanced approaches for gear modeling, including: modeling the contact between gear pairs as a set of springs, modeling the effect of faults on the mesh stiffness, and integrating the geometric errors. As a result, the model simulates successfully the acceleration signal of a realistic gear pair in a realistic environment. In this paper, we present a different approach to simulate partial tooth face faults, which takes into account the partial contact loss along the tooth contact line due to the fault's geometry. We propose a new analytical formulation for modeling complete tooth face faults that are located across the entire contact area. Additionally, a modified analytical expression for describing the tooth profile errors is proposed. Using a realistic simulation, we were able to experimentally validate the model.
引用
收藏
页码:77 / 100
页数:24
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