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简化接触理论是我国两院院士沈志云提出,用于研究列车轮轨滚动接触的4种理论之一,被国际学术界誉为“沈——理论”。其基本假定是:一点的变形仅与该点的受力有关,类似与文刻勒对地基的简化,但又充分考虑连续弹性体的变形特点,故大大简化计算。其次,简化接触理论更适合有限长或宽的物体,更符合工程实际。
The simplified contact theory is one of the four theories proposed by Shen Zhiyun, an academician of Chinese Academy of Engineering, and used to study rolling contact of train wheels and rails. It is praised as “Shen-theory” by the international academic community. The basic assumption is that a little deformation is only related to the force at this point, which is similar to that of Wen-che-lei’s simplification of foundation. However, the deformation characteristics of continuous elastic body are fully taken into consideration, which greatly simplifies the calculation. Secondly, to simplify the contact theory is more suitable for a limited length or width of objects, more in line with engineering practice.