Hierarchical Material Model Integrating Multi-Scale Phenomena in Composites

集成复合材料中多尺度现象的分层材料模型

• 批准号: 0409282
• 负责人: Assimina Pelegri
• 金额: $ 20.06万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0409282&HistoricalAwards=false
• 关键词: Hierarchical; Material; Model; Integrating; Multi

Development and validation of an adaptive, scale invariant materials model, based on microstructuralinformation that will efficiently account for the material and mechanical behaviors inherent incomposites, is proposed. Our approach involves: (a) Introduction of an adaptive hierarchical and multi-scalecomputational model, incorporating image analysis to correlate computational predictions; (b)Incorporation of architectural flexibility based on Unit Cell approach; (c) Utilization of Independent StateVariables that bridge the micro-to-macro scales; and (d) Account of interfacial mechanisms throughcohesive elements. The intellectual merit relies on the creation of an interdisciplinary program to tailorcomputational and fundamental material science, that will ultimately provide the underpinnings forunderstanding the mechanics of reinforced structures such as woven, bio, and nanocomposites. BroaderImpact: In the area of basic research and education the innovative and comprehensive approach taken bythis work will promote other research on composite materials aimed at developing a unified, scaleinvariant model for FRPCs. (B) In the area of industrial research, this program will affect a wide varietyof industries where significant gains in microscopic characterization and macroscopic behavior is oftenstymied by lack of knowledge of micro effects and ignorance of how to bridge the scales.

提出了一种基于微观结构信息的自适应、尺度不变材料模型的开发和验证，该模型将有效地解释复合材料固有的材料和力学行为。我们的方法包括：（a）引入自适应分层和多尺度计算模型，结合图像分析以关联计算预测;（B）结合基于单位单元方法的结构灵活性;（c）利用连接微观尺度和宏观尺度的独立状态变量;（d）通过内聚元素说明界面机制。智力价值依赖于创建一个跨学科的计划，以定制计算和基础材料科学，这将最终为理解增强结构（如编织，生物和纳米复合材料）的力学提供基础。更广泛的影响：在基础研究和教育领域，这项工作所采取的创新和全面的方法将促进其他复合材料的研究，旨在为FRPC开发一个统一的，尺度不变的模型。(B)在工业研究领域，该计划将影响各种各样的行业，这些行业在微观表征和宏观行为方面的显着收益往往受到缺乏微观效应知识和忽视如何弥合规模的阻碍。