Material Modelling and Computational Methods for River Valley Projects, Award in Indian and U.S. Currencies

描述：拟议的研究项目是地球科学，其目标是发展知识，以改进对地质材料的分析，并为将在河谷项目中使用的系统建立现实的本构模型。现实的本构模型将允许纳入许多因素，如非线性材料行为、地应力和在过去经常被忽略或高度简化的不连续性。与现代计算方法相结合，所产生的程序将能够解决用传统方法难以解决的高度复杂的问题。研究的一个独特方面是集成用于材料行为的真实表征的基本数学模型，在非线性计算过程中实现模型，并对典型结构的现场行为进行了验证。亚利桑那大学的C.S.Desai博士和新德里印度理工学院的A.Varadarajan博士开展了这项合作。范围：研究结果将有利于先进的本构模型和计算机程序的应用，为印度和美国的河谷项目开发合理的结构。研究在美国尤其相关，因为在地质材料和不连续面的本构模型方面正在进行重要的研究工作，开发新的实验室设备，采用计算机方法建立本构模型，并通过实验室/现场研究进行验证。正式的合作将对双方都有利。

Description: The proposed research project is in the earth sciences and its objective is to develop knowledge that will lead to improved analysis of geological materials and realistic constitutive models for systems that will be used in river valley projects. Realistic constitutive models will allow incorporation of many factors such as nonlinear material behavior, insitu stresses, and discontinuities very often ignored or highly simplified in the past. Together with modern computational methods the resulting procedures will permit solutions of highly complex problems which are difficult to solve using conventional methods. A unique aspect of the research is the integration of basic mathematical modelling for realistic characterization of the behavior of materials, implementation of models in non- linear computational procedures, and verification of field behavior of typical structures. The collaboration is between Drs. C.S. Desai, University of Arizona and A. Varadarajan, Indian Institute of Technology, New Delhi. Scope: Results of the research will benefit applications of advanced constitutive models and computer procedures for the development of rational structures for river valley projects both in India and the U.S. This type of research is particularly relevant in the U.S. as significant research work is in progress in constitutive modelling of geologic materials and discontinuities, development of new laboratory devices, implementation of constitutive models in computer methods and verification through laboratory/field studies. A formal collaboration will be of mutual benefit.