• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Materials >A New Biomimetic Composite Structure with Tunable Stiffness and Superior Toughness via Designed Structure Breakage
【2h】

A New Biomimetic Composite Structure with Tunable Stiffness and Superior Toughness via Designed Structure Breakage

机译：通过设计断裂具有可调的刚度和优异的韧性的新型仿生复合结构

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Mimicking natural structures has been highly pursued recently in composite structure design to break the bottlenecks in the mechanical properties of the traditional structures. Bone has a remarkable comprehensive performance of strength, stiffness and toughness, due to the intricate hierarchical microstructures and the sacrificial bonds within the organic components. Inspired by the strengthening and toughening mechanisms of cortical bone, a new biomimetic composite structure, with a designed progressive breakable internal construction mimicking the sacrificial bond, is proposed in this paper. Combining the bio-composite staggered plate structure with the sacrificial bond-mimicking construction, our new structure can realize tunable stiffness and superior toughness. We established the constitutive model of the representative unit cell of our new structure, and investigated its mechanical properties through theoretical analysis, as well as finite element modeling (FEM) and simulation. Two theoretical relations, respectively describing the elastic modulus decline ratio and the unit cell toughness promotion, are derived as functions of the geometrical parameters and the material parameters, and validated by simulation. We hope that this work can lay the foundation for the stiffness tunable and high toughness biomimetic composite structure design, and provide new ideas for the development of sacrificial bond-mimicking strategies in bio-inspired composite structures.
机译：在复合结构设计中，模仿自然结构最近已受到高度追捧，以打破传统结构的机械性能瓶颈。由于有机成分内复杂的层次微结构和牺牲性结合，骨骼具有出色的强度，刚度和韧性综合性能。在皮质骨的增强和增韧机制的启发下，本文提出了一种新型仿生复合材料结构，该结构具有模仿牺牲性结合的设计渐进式易碎内部结构。将生物复合材料的交错板结构与牺牲性的模拟粘合结构相结合，我们的新结构可以实现可调的刚度和优异的韧性。我们建立了新结构的代表性晶胞的本构模型，并通过理论分析，有限元建模（FEM）和仿真研究了其力学性能。作为几何参数和材料参数的函数，推导了分别描述弹性模量下降率和晶胞韧性提升的两个理论关系，并通过仿真进行了验证。我们希望这项工作可以为刚度可调和高韧性仿生复合结构设计打下基础，并为开发仿生复合结构中的牺牲粘结模仿策略提供新思路。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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