• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Composite Structures >Couple effect of surface energy and strain gradient on the mechanical behaviors of the biological staggered composites
【24h】

Couple effect of surface energy and strain gradient on the mechanical behaviors of the biological staggered composites

机译：表面能和应变梯度对生物交错复合材料力学行为的夫妇作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Biological staggered composites, which are hierarchy spanning from nano scale to macro scale, boast remarkable mechanical properties. In this paper, a trans-scale shear-lag model is established based on the strain gradient theory and the Gurtin-Murdoch model, which provides a chance to glimpse how the micro-nano structures of the biological composite determine its macroscopic mechanical behavior. With the trans-scale shear-lag model, we found that the deformation, stress distribution and overall effective modulus have strong size effects, which are related to the thickness of the 'matrix' and 'platelet' of the biological staggered composites. Based on the analysis, two normalized numbers d/l and Es/(hEp) are proposed to describe the size effects caused by the thickness of the matrix and platelet, respectively. Besides, the predicted effective moduli of the biological staggered structure composites are compared with the experiments to verify our trans-scale shear-lag model. Our research sheds light on the understanding of the mechanical behaviors of the staggered biological composites and provides theoretical guidance for the design of high-performance bionic composite materials.
机译：生物交错复合材料，它们是从纳米尺度跨越宏观尺度的层次结构，具有出色的机械性能。在本文中，基于应变梯度论和古霉素模型建立了反式剪切 - 滞后模型，其提供了一瞥生物复合材料的微纳米结构如何确定其宏观力学行为的机会。随着跨型剪切滞后模型，我们发现变形，应力分布和整体有效模量具有强大的尺寸效应，与生物交错复合材料的“矩阵”和“血小板”的厚度有关。基于分析，提出了两种归一化数字D / L和ES /（HEP），以分别描述由基质和血小板的厚度引起的尺寸效应。此外，将预测的生物交错结构复合材料的有效模量与实验进行了比较，以验证我们的跨尺度剪切滞后模型。我们的研究揭示了了解交错生物复合材料的机械行为，为高性能仿生复合材料设计提供了理论指导。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号