An elasto-plastic damage model for plain concrete subjected to high temperatures

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• 作者：Nechnech ; W. ; Meftah ; F. ; Reynouard ; J.M.
• 关键词：Damage theory ; Plasticity ; Thermal ; Unilateral phenomenon ; Thermo-mechanical interaction
• 刊名：Engineering Structures
• 出版年：2002
• 出版时间：May, 2002
• 年：2002
• 卷：24
• 期：5
• 页码：597-611
• 全文大小：351 K

文摘

A computational model allowing for the thermo-mechanical analysis of concrete structures at high temperatures by means of the finite element method is presented. The degradation of a part of the mechanical properties due to temperature is given through a diffused thermal damage model. Further, the model includes transient creep interaction with localized mechanical damage due to cracking. A comparison is made between experimental tests performed by some authors on concrete specimens at high temperatures and the numerical results obtained from the model presented.