A combined wear-fatigue design methodology for fretting in the pressure armour layer of flexible marine risers

作者：O'Halloran S M; Shipway P H; Connaire A D; Leen S B^*; Harte A M

来源：Tribology International, 2017, 108: 7-15.

DOI：10.1016/j.triboint.2016.10.020

• Fretting wear
• Fretting crack initiation
• Fretting life prediction
• Flexible risers
• Pressure armour wire

This paper presents a combined experimental and computational methodology for fretting wear-fatigue prediction of pressure armour wire in flexible marine risers. Fretting wear, friction and fatigue parameters of pressure armour material have been characterised experimentally. A combined fretting wear-fatigue finite element model has been developed using an adaptive meshing technique and the effect of bending-induced tangential slip has been characterised. It has been shown that a surface damage parameter combined with a multiaxial fatigue parameter can accurately predict the beneficial effect of fretting wear on fatigue predictions. This provides a computationally efficient design tool for fretting in the pressure armour layer of flexible marine risers.

• 出版日期2017-4