论文部分内容阅读
对金属材料粘塑性统一本构模型构建方法进行了研究,找到了粘塑性统一本构模型和经典塑性理论的相关点,发现了隐含于统一本构模型中的经典理论的塑性势和屈服面概念,借此发展了间断的经典塑性乘子,使其为连续函数,并提出了相应的构造方法,拓展定义了其物理意义,为其应用于更广泛材料的本构分析奠定了基础.推出了金属材料和岩土类材料的统一本构模型,通过数值模拟可以看出这种构建是合理的和实用的.
The constitutive model of visco-plastic constitutive model of metal material was studied. The related points of visco-plastic unified constitutive model and classical plastic theory were found. The plastic potential and yield surface of classical theory implicit in unified constitutive model were found. Concept, to develop the discontinuous classical plastic multiplier, make it a continuous function, and put forward the corresponding construction method, expand the definition of its physical meaning, and its application to a wider range of materials constitutive analysis of the foundation. The unified constitutive model of metal materials and geotechnical materials can be seen through numerical simulation that this kind of construction is reasonable and practical.