论文标题
热力学脱位理论:应用于BCC-晶体
Thermodynamic dislocation theory: Application to bcc-crystals
论文作者
论文摘要
本文介绍了热力学脱位理论,该理论包含对其第一个版本的几种修改,该版本最初是由Langer,Bouchbinder和Lookman(2010)提出的。使用大规模最小二乘分析标识的一小部分基于物理的材料参数,我们表明该理论可以在广泛的温度和应变速率上符合BCC晶体Niobium,Tantalum,Tantalum,Tungsten和Vanadium的应力应变曲线。
This paper presents the thermodynamic dislocation theory containing several modifications over its first version which was originally proposed by Langer, Bouchbinder, and Lookman (2010). Employing a small set of physics-based material parameters identified by the large scale least squares analysis, we show that the theory can fit the stress-strain curves of bcc crystals niobium, tantalum, tungsten, and vanadium over a wide range of temperatures and strain rates.