CDS&E: From Weakness to Strength in Bio-Composite Materials by Multiscale Modeling

CDS

• 批准号: 1306065
• 负责人: Xianqiao Wang
• 金额: $ 20.46万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1306065&HistoricalAwards=false
• 关键词: CDS& Weakness; Strength; Bio; Composite; CDS& Weakness; Strength; Bio; Composite

The research objective of this award is to hierarchically design bio-composite materials that have outstanding mechanical properties through the paradox of ?strength? from ?weakness? inspired by how natural bone is made. The researchers will therefore seek a more fundamental understanding of these natural materials? intricate hierarchical structures, scale-bridging mechanics, and material components through this award. This will be accomplished through the following research activities: (i) developing an atom-based continuum modeling tool that enables concurrent multiscale modeling and simulation of materials from atomic building blocks to macroscopic systems; (ii) determining a systematic understanding of mechanical behaviors at the interface between proteins and minerals in the collagen fibrils; (iii) establishing the multiscale structure-property relations in bone materials through the concurrent atomistic/continuum investigation of fibril arrays and the osteons structures. By establishing the precise relation between the structural hierarchy and the mechanical properties, and based on the design strategies extracted from bone materials, this research will establish guidelines for bottom-up hierarchal design of engineered bio-composite materials to have high strength, high stiffness and high toughness.If successful, the results of this research will advance the understanding of bio-inspired composites and provide transformative ideas to achieve the goal of synthesizing bio-inspired materials by design, thereby addressing current limitation of synthetic composites. It will also bring new concepts to the fields of materials science, mechanical engineering, and mechanics of materials at various length scales. The results will provide a unique opportunity to establish a multidisciplinary learning and training program that transcends the traditional boundaries between academic disciplines and offers undergraduate and graduate students, especially those from underrepresented groups, an integrated approach of team research and career development. Moreover, the results will be integrated to improve and enrich existing engineering courses at University of Georgia.

该奖项的研究目标是层次设计的生物复合材料，这些材料具有通过“强度”的悖论具有出色的机械性能？来自？弱点？受到天然骨骼的启发。因此，研究人员会寻求对这些天然材料的更基本的理解？通过此奖项，复杂的分层结构，规模桥梁的力学和材料组成部分。这将通过以下研究活动来完成：（i）开发一种基于原子的连续体建模工具，该工具可以同时进行多尺度建模和对原子构建块到宏观系统的材料的模拟； （ii）确定胶原纤维中蛋白质和矿物质之间界面上的机械行为的系统理解； （iii）通过对原纤维阵列和骨结构的并发原子/连续研究来建立骨骼材料中的多尺度结构特性关系。 通过建立结构层次结构和机械性能之间的精确关系，并基于从骨料材料中提取的设计策略，这项研究将建立针对工程生物复合材料的自下而上层次设计的指南，以具有高强度，高刚度和高韧性。设计，从而解决合成复合材料的当前局限性。它还将为材料科学，机械工程和材料机制的领域带来新的概念。结果将为建立多学科学习和培训计划提供独特的机会，该计划超越学术学科与提供本科生和研究生之间的传统界限，尤其是来自代表性不足的团体的界限，这是团队研究和职业发展的综合方法。此外，结果将集成以改善和丰富佐治亚大学现有的工程课程。