Modeling and Analysis of the Mechanical Behavior of Advanced Engineering Materials at the Micro- and Nano-scales

先进工程材料在微米和纳米尺度上的机械行为的建模和分析

• 批准号: 155112-2012
• 负责人: Schiavone, Peter
• 金额: $ 1.6万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=545632
• 关键词: Modeling; Analysis; Mechanical; Behavior; Advanced

A crucial part of the process of designing, developing or testing of advanced materials and composite material structures is concerned with the prediction of the behavior of the material or structure when subjected to various loading configurations and environmental conditions. One extremely effective method of doing this in terms of both cost and time is to 'build' a mathematical model. The latter can then be used repeatedly to analyze the response of the material or structure to various different operational circumstances. The information obtained then allows engineers to design and develop the most effective and cost-efficient assembly for a specified purpose. The key to designing an effective mathematical model is to understand the salient features of the behavior of the material or structure and ensure that these are captured correctly in the model. This, however, must be balanced against the requirement that the model is not overly complicated and is convenient to use. In this research, the applicant will continue to apply his expertise in continuum mechanics and analytical techniques to devise new and extend existing mathematical models describing the behavior of advanced materials and material structures at the nano- and micro-scales. In particular, recognizing the key contribution of material surfaces at the nano-scale, the applicant will continue his work in the development of efficient, well-posed and numerically-stable models which incorporate the most effective description of these 'surface effects' in nano-mechanics. These models have been shown also to be applicable at the micro-scale providing a more accurate prediction of material behavior which has led to the elimination of many of the contradictions and inadequacies of existing mathematical models. In addition, at the micro-scale, we continue our research into the analysis of models of composite materials where the design involves the introduction of material inhomogeneities (e.g. in the design of fibre-reinforced composites) as well as in the prediction of the behavior of advanced materials for which experiments show that microstructure plays a significant role (such materials include bone and ligament as well as synthetic composites, cellular solids and tortuous rock).

高级材料和复合材料结构的设计，开发或测试过程的关键部分涉及对材料或结构进行各种负载配置和环境条件的预测。在成本和时间方面，执行此操作的一种极为有效的方法是“构建”数学模型。然后可以反复使用后者分析材料或结构对各种不同操作情况的响应。然后，获得的信息允许工程师为指定目的设计和开发最有效，最具成本效益的组件。设计有效的数学模型的关键是了解材料或结构行为的显着特征，并确保在模型中正确捕获它们。但是，这必须与模型并不过于复杂且使用方便使用的要求保持平衡。在这项研究中，申请人将继续将其在连续力学和分析技术方面的专业知识来设计新的，并扩展现有的数学模型，描述纳米和微尺度上高级材料和材料结构的行为。特别是，申请人认识到纳米级材料表面的关键贡献，将继续他的工作，以开发有效，稳定且数值稳定的模型，这些模型纳入了纳米力学中这些“表面效应”的最有效描述。这些模型也被证明适用于微尺度，提供了更准确的材料行为预测，这导致消除了许多现有数学模型的矛盾和不足。 In addition, at the micro-scale, we continue our research into the analysis of models of composite materials where the design involves the introduction of material inhomogeneities (e.g. in the design of fibre-reinforced composites) as well as in the prediction of the behavior of advanced materials for which experiments show that microstructure plays a significant role (such materials include bone and ligament as well as synthetic composites, cellular solids and tortuous rock).