Fatigue life assessment of surface hardened sintered roller under sliding-rolling contact condition

被引：0
|
作者：
Yoshida, A [1 ]
Ohue, Y [1 ]
Seki, M [1 ]
机构：
[1] Okayama Univ, Fac Engn, Okayama 700, Japan
来源：
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON MECHANICAL TRANSMISSIONS | 2001年
关键词：
life assessment; sintered roller; sliding-rolling contact; fracture mechanics; pore distribution;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
To assess the surface durability of sintered machine elements, the fatigue lives of 28 kinds of sintered rollers under a sliding-rolling contact condition were estimated by using the Paris's law based on the fracture mechanics. The fatigue tests were conducted using two cylinders testing machines. The stress intensity factor for the mode II under a condition of Hertzian contact was calculated using FEM. The value of the stress intensity factor became larger as the crack length and the pore size became longer. It could be clarified that the fatigue lives of the sintered rollers depended on the pore diameter, the distance between pores and its hardness. It was important to take the pore distribution into consideration to assess the fatigue lives of the sintered rollers.
引用
收藏
页码：472 / 477
页数：6
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