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相关概念视频

Kirchoff's Rules: Application01:22

Kirchoff's Rules: Application

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Kirchhoff's rules quantify the current flowing through a circuit and the voltage variations around the loop in a circuit. Applying Kirchhoff's rules generates a set of linear equations that allow us to find the unknown values in circuits. These may be currents, voltages, or resistances.
When applying Kirchhoff's first rule, the junction rule, label the current in each branch and decide its direction. If the chosen direction is wrong, it will have the correct magnitude, although the...
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Machines01:19

Machines

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Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
A free-body diagram of the...
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Block Diagram Reduction01:22

Block Diagram Reduction

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The process of deriving the transfer function of a control system often involves reducing its block diagram to a single block. This simplification can be achieved through a series of strategic operations, including relocating branch points and comparators. These operations preserve the overall function of the system while allowing for easier manipulation and combination of blocks.
The first step in this process is the identification and relocation of a branch point. A branch point, where a...
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相关实验视频

Updated: Jul 6, 2025

4D Printed Bifurcated Stents with Kirigami-Inspired Structures
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为kirigami设计提供一个增材框架.

Levi H Dudte1, Gary P T Choi2, Kaitlyn P Becker1,3

  • 1School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.

Nature computational science
|January 4, 2024
PubMed
概括
此摘要是机器生成的。

本研究介绍了基里加米机械元材料的增材设计方法. 专注于空的空间作为链接,它使用线性代数进行高效,可重新配置和刚性部署的模式创建.

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Last Updated: Jul 6, 2025

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科学领域:

  • 机械工程 机械工程
  • 材料科学 材料科学 材料科学
  • 超材料设计设计 超材料设计

背景情况:

  • 剪纸艺术的基里加米提供了独特的机械性能.
  • 设计基于kirigami的机械超材料传统上涉及复杂的优化.
  • 现有的方法经常在重新配置和刚性部署方面扎.

研究的目的:

  • 开发一种高效的添加方法,用于基里加米机械元材料的反向设计.
  • 为了设计,利用kirigami图案中的负空间.
  • 为了能够控制部署角度,偏移和边界条件.

主要方法:

  • 将负空间建模为四条条链接.
  • 在相邻的链接之间建立递归关系.
  • 采用基本的线性代数和矩阵乘法来生成模式.
  • 代程序编码兼容性,重新配置性和刚性部署性.

主要成果:

  • 一个线性设计策略,避免非凸起的全局优化.
  • 创建多样化,刚性部署,紧,和可重新配置的kirigami模式.
  • 通过使用各种材料,成功地物理制造了设计的kirigami结构.

结论:

  • 添加方法为设计kirigami机械元材料提供了一个有效的途径.
  • 这种方法通过专注于负空间链接来简化设计过程.
  • 这些发现为机械元材料设计和制造提供了新的可能性,这些设计和制造受到基里加米艺术的启发.