Gear bending fatigue strength test method based on similarity theory

The embodiment of the invention provides a gear bending fatigue strength test method based on a similarity theory, and relates to the technical field of gears, and the method comprises the steps: building a bevel gear original model, and building a bevel gear similar model similar to the bevel gear original model based on a driving wheel in the bevel gear original model; under the condition that the tooth root bending stress of the driving wheel in the bevel gear similar model is consistent with the tooth root bending stress of the driving wheel in the straight gear model, determining the straight gear model according to the bevel gear similar model; and testing the bending fatigue strength of the gear based on the straight gear model. The embodiment of the invention can reduce test requirements and improve accuracy. 本公开实施例提供了一种基于相似理论的齿轮弯曲疲劳强度试验方法，涉及齿轮技术领域，该方法包括：建立斜齿轮原始模型，并基于所述斜齿轮原始模型中的主动轮构建与所述斜齿轮原始模型相似的斜齿轮相似模型；在斜齿轮相似模型中主动轮的齿根弯曲应力与直齿轮模型中主动轮的齿根弯曲应力一致的情况下，根据所述斜齿轮相似模型确定直齿轮模型；基于所述直齿轮模型进行齿轮弯曲疲劳强度测试。本公开实施例可以降低试验要求，