Multiscale Mechanics of Paper

纸张的多尺度力学

• 批准号: 9713764
• 负责人: Martin Starzewski
• 金额: $ 18万
• 依托单位: Institute of Paper Science and Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-15 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9713764&HistoricalAwards=false
• 关键词: Multiscale; Mechanics; Paper

9713764 Ostoja-Starzewski The multiscale mechanics of paper treated as a randomly structured materials is investigated under this project. The scales involved are from the level of a fiber network comprising hundreds, or thousands, of cellulose fibers (micron or millimeter scale) to an effective continuum level (centimeters or meters scale). Optical and confocal microscopy observations and measurements of fiber network micromechanics, biaxial tensile testing, and uniaxial tensile testing over a range of scales from 2 millimeters to 2 meters are made. These experiments are used as a basis for verification of computational micromechanics modeling of fiber networks, represented as large systems of randomly connected small beams, as well as for development of scale- dependent stochastic constitutive laws of paper. The results of this program are synthesized into ready-to-use formulas, maps, and software modules that could be used by the paper industry, researchers, and students. ***

9713764 Ostoja-Starzewski在本项目下研究了作为随机结构材料的纸的多尺度力学。所涉及的尺度是从包含数百或数千纤维素纤维的纤维网络的水平（微米或毫米尺度）到有效连续体水平（厘米或米尺度）。光学和共聚焦显微镜观察和测量纤维网络微观力学，双轴拉伸试验，单轴拉伸试验范围从2毫米到2米。这些实验被用作验证纤维网络的计算微观力学建模的基础，其表示为随机连接的小梁的大系统，以及用于开发纸的尺度相关随机本构律。该程序的结果被合成为可供造纸行业、研究人员和学生使用的现成公式、地图和软件模块。 ***