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首页> 外文期刊>Manufacturing Review >Investigation into initiation and propagation of cracks in the coated surfaces of spur gears with submodelling and irreversible cohesive-zone modelling techniques
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Investigation into initiation and propagation of cracks in the coated surfaces of spur gears with submodelling and irreversible cohesive-zone modelling techniques

机译：用烟草胶齿轮涂层裂缝的启动与传播调查，具有亚源粘齿涂层和不可逆凝聚区建模技术

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摘要

Spur gears are one of the commonly used transmission parts in industry, due to its simplicity in structures and low cost in manufacturing. Due to a performance requirement, a spur gear may be coated with a specific coating arrangement. Under working conditions, the coating on the teeth may be damaged due to contact fatigue, in the forms such as micro-pitting and/or delamination. The failure mechanism of the coated surface under the gearing contact loading has been investigated intensively through experiment. A comprehensive computational model, which could be used to investigate the propagation of cracks in the coated surfaces, is still lacking. In the research reported in this paper, several finite element modelling techniques, including that for submodelling and irreversible cohesive zone modelling (CZM), have been developed to investigate the failure mechanisms of the coated surfaces of gears under the gearing contact fatigue loading. These techniques not only allow the localized stresses distribution and deformation in the interested locations in the coating and the substrate to be investigated in detail but also enable visual observation on the development of fatigue damages in the coating.
机译：由于其结构简单和制造成本低，齿轮是工业中常用的传动部件之一。由于性能要求，可以用特定的涂覆装置涂覆正齿轮。在工作条件下，齿上的涂层可能由于接触疲劳而损坏，以诸如微点蚀和/或分层的形式。通过实验强烈地研究了齿轮接触载荷下涂覆表面的故障机理。仍然缺乏一种综合计算模型，可用于研究涂层表面中的裂缝的传播。在本文报道的研究中，已经开发了几种有限元建模技术，包括用于亚源和不可逆的粘性区域建模（CZM），以研究齿轮接触疲劳负荷下齿轮涂层的故障机制。这些技术不仅允许详细研究涂层中感兴趣的位置的局部应力和变形，而且还可以对涂层疲劳损伤的发展进行视觉观察。

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