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Ferro-cement is a distinctive construction material that represents an innovative variant of reinforced concrete, characterized by its unique composition and the method by which it is formed. Unlike standard reinforced concrete, which relies on larger steel bars for reinforcement, ferro-cement utilizes densely packed layers of mesh or fine rods, fully encased in cement mortar. This composition allows for the creation of structures that are significantly thinner and more flexible than their...
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Wood panel products are essential materials used in construction for applications such as flooring, siding, and roofing, typically available in standard dimensions of 4 feet by 8 feet, with thicknesses varying from one-quarter of an inch to one and one-eighth inches. Among the most common types of wood panels is plywood, which is produced by gluing multiple layers of thin wood veneers under pressure. The grain of the outer veneers runs lengthwise, while the grains of the interior layers run...
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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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Proportional-Derivative (PD) controllers are widely used in fan control systems to improve stability and performance. A fan control system can be effectively represented using a Bode plot to illustrate the impact of a PD controller through its transfer function. The Bode plot visually conveys how PD control modifies the fan's response across various frequencies, providing a frequency domain interpretation of the controller's behavior.
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耳罩式风扇可折叠,具有厚厚的面板.

Chisaki Kitajima1, Yoneda Taiju2, Koki Nishi3

  • 1Faculty of Design, Kyushu University, Fukuoka 815-8540, Japan.

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概括

工程师现在可以将昆虫翅膀折叠扩展到大型结构. 这种仿生方法克服了可部署工程应用中的厚度挑战.

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生物仿真学的生物仿真学.可部署结构的部署结构.昆虫的翅膀是昆虫的翅膀.奥里加米是指原始的

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科学领域:

  • 生物仿真工程 生物仿真工程
  • 机械工程 机械工程
  • 结构工程 结构工程

背景情况:

  • 生物启发的可部署结构的缩放,由于几何缩放规律 (如方形立方体规律) 提出了挑战.
  • 生物折叠系统通常会失去结构效率,并在更大规模上面临材料厚度问题.
  • 耳后翼的紧折叠机制可以作为高效,大规模部署系统的模型.

研究的目的:

  • 为了将耳后翼折叠机制转化为人类规模的工程应用.
  • 开发一种设计方法来复制厚板材料中的生物折叠原理.
  • 为了应对将生物折叠系统扩展到实际工程用途的挑战.

主要方法:

  • 耳 (Dermaptera) 翅膀折叠机制的几何原理的分析.
  • 开发厚板材料的参数设计方法.
  • 整合原始设计技术,以免碰撞折叠和制造原型.

主要成果:

  • 在厚板结构中成功实现了耳翅膀折叠机制.
  • 原型展示了结构完整性,高效的折叠和部署,并解决了与厚度相关的问题.
  • 对有限厚度面板的拟议折叠模式的验证.

结论:

  • 开发的设计方法为扩展生物折叠机制提供了实用方法.
  • 这种仿生策略适用于航空航天,建筑和可部署系统的大规模工程应用.
  • 该研究弥合了生物模型和生物仿真设计中的实际工程实施之间的差距.