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Full thermo-mechanical coupling using eXtended finite element method in quasi-transient crack propagation.
Advanced Modeling and Simulation in Engineering Sciences Pub Date : 2018-07-03 , DOI: 10.1186/s40323-018-0112-9
Fakhreddine Habib 1 , Luca Sorelli 2 , Mario Fafard 1
Affiliation  

This work aims to present a complete full coupling eXtended finite element formulation of the thermo-mechanical problem of cracked bodies. The basic concept of the extended finite element method is discussed in the context of mechanical and thermal discontinuities. Benchmarks are presented to validate at the same time the implementation of stress intensity factors and numerical mechanical and thermal responses. A quasi-transient crack propagation model, subjected to transient thermal load combined with a quasi-static crack growth was presented and implemented into a home-made object-oriented code. The developed eXtended finite element tool for modeling two-dimensional thermo-mechanical problem involving multiple cracks and defects are confirmed through selected examples by estimating the stress intensity factors with remarkable accuracy and robustness.

中文翻译:

准瞬态裂纹扩展中使用扩展有限元方法的完全热力耦合。

这项工作的目的是为裂纹体的热机械问题提供一个完整的全耦合扩展有限元公式。在机械和热不连续性的背景下讨论了扩展有限元方法的基本概念。提出了基准,以同时验证应力强度因子以及数值机械和热响应的实施。提出了一种在瞬态热载荷作用下结合准静态裂纹扩展的准瞬态裂纹扩展模型,并将其实现为自制的面向对象代码。
更新日期:2018-07-03
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