Kelvin Mode Coalescence in Natural Composites

天然复合材料中的开尔文模式聚结

• 批准号: 9401518
• 负责人: Stephen Cowin
• 金额: --
• 依托单位: CUNY City College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-07-01 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9401518&HistoricalAwards=false
• 关键词: Kelvin; Mode; Coalescence; Natural; Composites

9401518 Cowin The objective of this research is to study the mechanism whereby certain symmetry properties of the elasticity tensors develop in nature when there is no obvious reason for them to occur. This may reflect a response to cyclic loadings rather than simply static conditions. Two natural composites, bone and wood, have been shown to exhibit this behavior and the evaluation as to why this occurs may prove profitable for man-made composite design. This raises the question: has nature devised this particular mechanism for mitigating the damaging effects of repeated cyclic loadings in bone and trees? ***

9401518考恩：这项研究的目的是研究弹性张量的某些对称性在没有明显原因的情况下在自然界中发展的机制。这可能反映了对循环载荷的响应，而不是简单的静态条件。两种天然复合材料--骨和木材--已被证明表现出这种行为，关于为什么会发生这种情况的评估可能被证明对人造复合材料设计有利。这提出了一个问题：大自然是否设计了这种特殊的机制来减轻反复循环加载对骨骼和树木的破坏影响？*