Propagation of Sub-surface Cracks in Railway Wheels for Wear-induced Conformal Contacts
スポンサーリンク
概要
- 論文の詳細を見る
The ability to predict the criticality of internal cracks in railway wheels requires accurate knowledge of stress intensity factors KI, KII, KIII under contact loads. These factors depend both on the total load acting on the wheel and on how the load is transmitted through the wheel/rail interface, that is to say, they depends on the pressure distribution between wheel and rail. However, till today the solutions commonly used consider a theoretical (Hertzian) pressure distribution, even though the real contact patch may be far different for most of the lifespan of the wheel due to wear or to the dynamic conditions. In this paper an approach is developed with the aim of solving the case of an internally cracked wheel subjected to an arbitrary contact patch and pressure distribution. In particular, attention is focused on the case of hollow wear, which makes it possible to obtain very conformal contacts. The results are discussed and compared with the analytical solutions that consider Hertzian pressure distributions with the same total load.
論文 | ランダム
- 記念出版「土木用語大辞典」の編集経過 (土木学会創立80周年記念特集号) -- (80周年記念事業の紹介)
- 札幌都市圏--自然環境の首都・札幌 (豊かな国をつくる) -- (豊かな地域をつくる)
- 小樽運河の保存と改修 (近代土木の保存と再生) -- (事例編)
- 外来手術の麻酔
- 大先輩に聞く--飯吉精一名誉会員