Plastic collapse of a thin annular disk of variable thickness subject to thermo-mechanical loading

Elena Lyamina, Sergei Alexandrov, Yeau Ren Jeng

研究成果: Conference contribution

摘要

A semi-analytic solution for plastic collapse of a thin annular disk of variable thickness subject to thermo-mechanical loading is presented. It is assumed that the yield criterion depends on the hydrostatic stress. A distinguished feature of the boundary value problem considered is that there are two loading parameters. One of these parameters is temperature and the other is pressure over the inner radius of the disk. The general qualitative structure of the solution at plastic collapse is discussed in detail. It is shown that two different plastic collapse mechanisms are possible. One of these mechanisms is characterized by strain localization at the inner radius of the disk. The entire disk becomes plastic according to the other plastic collapse mechanism. In addition, two special regimes of plastic collapse are identified. According to one of these regimes, plastic collapse occurs when the entire disk is elastic, except its inner radius. According to the other regime, the entire disk becomes plastic at the same values of the loading parameters at which plastic yielding starts to develop.

原文English
主出版物標題19th European Conference on Fracture
主出版物子標題Fracture Mechanics for Durability, Reliability and Safety, ECF 2012
發行者European Conference on Fracture, ECF
ISBN(電子)9780878493609
ISBN(列印)978-5-905576-18-8
出版狀態Published - 2012
事件19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012 - Kazan, Russian Federation
持續時間: 2012 8月 262012 8月 31

出版系列

名字19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012

Conference

Conference19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012
國家/地區Russian Federation
城市Kazan
期間12-08-2612-08-31

All Science Journal Classification (ASJC) codes

  • 安全、風險、可靠性和品質

指紋

深入研究「Plastic collapse of a thin annular disk of variable thickness subject to thermo-mechanical loading」主題。共同形成了獨特的指紋。

引用此