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首页> 外文期刊>International Journal of Plasticity >VISCOPLASTIC BEHAVIOUR OF POROUS METALLIC MATERIALS SATURATED WITH LIQUID .1. CONSTITUTIVE EQUATIONS
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VISCOPLASTIC BEHAVIOUR OF POROUS METALLIC MATERIALS SATURATED WITH LIQUID .1. CONSTITUTIVE EQUATIONS

机译：液体饱和的多孔金属材料的粘塑性行为.1。本构方程

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摘要

Close to their melting point, metallic alloys containing a liquid phase can be described, in the high solid fraction range, as viscoplastic porous media saturated with liquid. In this article, a model is proposed in the general framework of the mixture theory. A constitutive equation for the deformation of the rate-dependent porous solid phase is given which is intended to improve the classical rheological description of metallic solid-liquid mixtures, in particular, in the case of non-negligible interstitial liquid pressure. Three deformation paths are studied in the frame of this constitutive equation: shear deformation, drained hydrostatic deformation and constant volume deformation in undrained conditions. The characteristic functions appearing in the constitutive equation will be identified, using these three deformation paths in the experimental part of this study. (C) 1997 Elsevier Science Ltd. [References: 38]
机译：接近液相的含液相的金属合金可以在高固含量范围内描述为被液体饱和的粘塑性多孔介质。本文在混合理论的一般框架下提出了一个模型。给出了用于速率相关的多孔固相变形的本构方程，该方程旨在改善金属固液混合物的经典流变学描述，特别是在间隙流体压力不可忽略的情况下。在本构方程的框架内研究了三个变形路径：剪切变形，排水静水变形和不排水条件下的恒定体积变形。本研究的实验部分将使用这三种变形路径来识别本构方程中出现的特征函数。 （C）1997 Elsevier Science Ltd. [参考：38]

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