Abstract
Fretting wear is a common problem in different industries especially when it comes to interactions between metallic components. In heat exchangers, the problem plays a destructive role due to long term interaction between tubes and supports which may consequently lead to tube failure. In the present work, the tube-support fretting wear problem was investigated by refining models for friction effects in the stick-slip regions. The Slip distance is the most important parameter for wear estimation. Using the tangential stress distribution in the contact area, a new hybrid spring-damper friction model was developed. The model is able to estimate elastic, plastic and partial slipping distances during relative motion. The ability of the model to reproduce experimental tests is investigated in the present work.
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