Effect of contact pad rigidity on fretting fatigue behavior of NiCrMoV turbine steel

被引：33

作者：

Jayaprakash, M. ^{[2
]}

Mutoh, Yoshiharu ^{[1
]}

Asai, Kunio ^{[3
]}

Ichikawa, Kunihiro ^{[4
]}

Sukarai, Shigeo ^{[4
]}

机构：

[1] Nagaoka Univ Technol, Dept Syst Saftey, Niigata 9402188, Japan

[2] Nagaoka Univ Technol, Dept Mat Sci, Niigata 9402188, Japan

[3] Hitachi Ltd, Mat Res Lab, Ibaraki 3178511, Japan

[4] Hitachi Ltd, Hitachi Works, Dept Turbine Plant Design, Ibaraki 3178511, Japan

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2010年 / 32卷 / 11期

关键词：

Fretting fatigue; Contact pad rigidity; Tangential stress; Design curve; Turbine steel; FRACTURE-MECHANICS; RELATIVE SLIP; PRESSURE;

D O I：

10.1016/j.ijfatigue.2010.04.005

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the present study, the effect of contact pad rigidity on fretting fatigue strength of turbine steels (Ni-Cr-Mo-V steel specimen with 12-Cr steel contact pad) was investigated by conducting fretting fatigue tests with various foot heights of contact pads. Finite element analysis was also carried out to evaluate the stress distribution near the contact edge. From the results, higher tangential stress at the contact edge was induced by higher rigidity contact pad, while higher compressive stress at the contact edge was also induced by higher rigidity contact pad. Fretting fatigue strength was influenced not only by tangential stress but also by compressive stress. A design curve defined by two parameters (tangential stress and compressive stress) to predict fretting fatigue life was proposed. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1788 / 1794

页数：7

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