Fretting Wear Prediction of an Energy-Based Model for Heat Transfer Tube in Steam Generators

Abstract

Abstract The heat transfer tubes of steam generators can be vibrated by the fluid, which causes impact and sliding between tubes and the supports and leads to the fretting wear of tubes. Fretting wear is an unavoidable damage of heat exchanger tube bundles. In practical engineering, it is necessary to predict the wear of the heat exchanger tube, especially in steam generators. At present, the most widely-used fretting wear prediction model is the Archard model, which can not consider the effect of impact in wear process. In fact, the role of impact in wear can not be ignored. Based on an energy method, an impact-sliding prediction model is proposed. And a finite element calculation program is established, and the prediction results of the Archard model and the energy-based model method are calculated respectively. The results show that the prediction of impact sliding wear prediction model based on energy loss can adapt to more conditions, and is better than Archard model in the wear prediction of steam generator tube bundles. The model is promising in prediction of the fretting wear of the steam generator and ensure the safe operation of the equipment.