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坚固的双建筑混凝土,由机器人增材制造实现
Arjun Prihar1, Shashank Gupta1, Hadi S Esmaeeli1
1Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, USA.
Nature communications
|August 29, 2024
概括
研究人员模仿了大自然的双设计,从鱼的片到工程建筑混凝土. 这种新的方法显著提高了混凝土的断裂性和耐损性,提供了更坚固的材料.
科学领域:
- 材料科学 材料科学 材料科学
- 生物模拟学是一种生物模拟学.
- 土木工程 土木工程是指土木工程.
背景情况:
- 大自然利用复杂的架构,比如鱼尺度的双形结构,以增强材料的性能.
- 这种自然设计具有以双层方式螺旋排列的原纤维,提供损伤耐受性.
研究的目的:
- 为了设计建筑混凝土,灵感来自鱼的双建筑.
- 为了研究这种仿生混凝土设计的硬化机制和断裂行为.
主要方法:
- 采用大型的两组件机器人增材制造工艺,用于复杂的混凝土制造.
- 对比的双形混凝土设计与形混凝土,直线混凝土和单质造混凝土对应物.
主要成果:
- 建筑混凝土表现出一种不易碎的反应和上升的R曲线,与传统造混凝土不同.
- 观察到一个假设的双层裂屏蔽机制.
- 与混凝土相比,裂纹尖端的相互锁定和裂纹偏移导致裂纹性增加63%.
结论:
- 仿生双建筑混凝土表现出优越的断裂性和非易碎的故障模式.
- 机器人增材制造使这些先进的混凝土结构能够大规模生产.
- 这种方法为开发更有弹性和耐损害的建筑材料提供了一个有希望的途径.
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