Evaluating and modeling the mechanical response and behaviour of high performance composite materials

评估和建模高性能复合材料的机械响应和行为

• 批准号: 249516-2012
• 负责人: Sudak, Leszek
• 金额: $ 1.46万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=594273
• 关键词: Evaluating; modeling; mechanical; response; behaviour

In today's rapidly increasing technological world, the application of high performance composite materials is enormous. As a result, the applicant is interested in the evaluation and modeling of composite materials, in particular the role of imperfections and inclusion geometry, in order to understand the mechanical response of advanced materials. When developing or testing new structures built from these novel materials it is often less expensive and more convenient to construct a model (either numerical or theoretical) instead of testing the actual structure. The latter can thus be used to predict and anlyze the mechanical behaviour of a real physical system. The information obtained from the model is extremely useful when developing or applying new techniques when designing with advanced composite materials. In this research, the applicant will develop and analyze new physical models that examine the effects of material imperfections (such as cracks, voids, inclusions) and material type (such as elastic, poroelastic). The results of this work will be significant in providing physical insight with a wide perspective on what implications these effects will have on the overall mechanical response of composite materials. Also of interest will the the investigation of scattering of elastic waves by mutliple arbitrary inclusions. This is extremely significant for studies of wave attenuation and determination of effective constants for elastic and poroelastic composite materials. In addition, the results will be of significant importance to problems in geophysical exploration. Furthermore, the applicant will investigate multiscale modeling of the mechanical behaviour of nano-reinforced composite materials. In particular, it is well documented that bone cement is susceptible to cracking. However, with the addition of carbon nanotubes into the cement will utlimately improve the mechanical properties while retaining its structural capabilities. The outcome of this research is to educate highly skilled graduates such that their training will allow them to take leadership positions in industry, government laboratories and academia thus addressing the concerns of shortages of talented engineers in Canada.

在科技飞速发展的今天，高性能复合材料的应用是巨大的。因此，申请人对复合材料的评估和建模感兴趣，特别是缺陷和夹杂几何的作用，以便了解先进材料的机械响应。当开发或测试由这些新材料制成的新结构时，构建模型（无论是数值模型还是理论模型）通常比测试实际结构更便宜，也更方便。后者因此可以用来预测和分析一个真实的物理系统的力学行为。从模型中获得的信息对于开发或应用新技术进行先进复合材料设计非常有用。在这项研究中，申请人将开发和分析新的物理模型，以检查材料缺陷（如裂纹，空洞，夹杂物）和材料类型（如弹性，孔隙弹性）的影响。这项工作的结果将具有重要意义，为这些影响将对复合材料的整体力学响应产生何种影响提供了广泛的物理见解。同样令人感兴趣的是研究弹性波被多个任意包含物散射的问题。这对弹性和孔弹性复合材料的波衰减研究和有效常数的确定具有重要意义。研究结果对解决地球物理勘探中的问题具有重要意义。此外，申请人将研究纳米增强复合材料力学行为的多尺度建模。特别是，有充分的文献证明骨水泥易开裂。然而，随着碳纳米管的加入，水泥最终将在保持其结构能力的同时提高其力学性能。这项研究的结果是培养高技能的毕业生，使他们能够在工业、政府实验室和学术界担任领导职务，从而解决加拿大有才华的工程师短缺的问题。