Material behavior of steel : Modeling of complex phenomena and thermodynamic consistency
Material behavior of steel : Modeling of complex phenomena and thermodynamic consistency
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钢的材料行为：复杂现象和热力学一致性的建模
DOI：
10.1016/j.ijplas.2007.07.005
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发表时间：
2008
影响因子：
9.8
通讯作者：
D. Helm
中科院分区：
文献类型：
--
作者：
M. Wolff;M. Böhm;D. Helm
钢具有复杂的材料行为。应力和应变相关的相变、相变诱导塑性（TRIP）及其与塑性的相互作用是具有理论和实际意义的重要现象，因为它们可能会导致工件变形。这些现象继续在实验和理论上进行深入研究。为了模拟真实的过程，如工件的热处理，必须在合适的整体模型中包括相关的现象。本文的目的是在宏观连续介质力学的背景下制定这样一个模型，并讨论能力。由于TRIP和塑性可能的相互作用（耦合），通常的方法在塑性没有相变有很大的修改。我们采用非线性硬化的一般方法，允许模型可观察到的影响的相互作用的塑性和TRIP。此外，我们在充分条件下证明了热力学相容性。
Steel has a complex material behavior. Stress- and strain-dependent phase transformations, transformation-induced plasticity (TRIP), and its interactions with plasticity are important phenomena of both theoretical and practical interest, as they may cause distortion of work-pieces. These phenomena continue to be intensively studied both experimentally and theoretically. In order to simulate real processes like heat treatment of work-pieces, one has to include the relevant phenomena in a suitable bulk model. It is the aim of the current paper to contribute to the formulation of such a model in the context of macroscopic continuum mechanics and to discuss the capabilities. Due to the possible interaction (coupling) of TRIP and plasticity, the usual approach in plasticity without phase transformations has to be modified substantially. We apply a general approach for non-linear hardening, allowing to model observable effects of interaction of plasticity and TRIP. Besides this, we prove the thermodynamic consistency under sufficient conditions.