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相关概念视频

Self-Locking Screw01:16

Self-Locking Screw

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A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
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Unsymmetric Bending01:18

Unsymmetric Bending

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Unsymmetrical bending occurs when the bending moment applied to a structural member does not align with its principal axis. This misalignment leads to complex stress distributions and deflection patterns that differ from those in symmetrical bending, and are essential for designing structures to withstand different loading conditions. In unsymmetrical bending, the neutral axis—where stress is zero—does not necessarily align with the geometric axes of the cross-section. The...
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Mechanisms of Membrane-bending01:15

Mechanisms of Membrane-bending

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The living membranes are flexible due to their fluid mosaic nature; however, their bending into different shapes is an active process regulated by specific lipids and proteins. The membrane bending can be transient as seen in vesicles or stable for a long time as in microvilli. Cells regulate the size, location, and duration of the membrane curvature.
Membrane bending can happen due to intrinsic changes in lipid composition or extrinsic association with different proteins. The proteins involved...
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Protein Folding01:22

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Overview
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Protein Folding01:25

Protein Folding

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Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
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Unsymmetric Bending - Angle of Neutral Axis01:15

Unsymmetric Bending - Angle of Neutral Axis

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Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
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Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding
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基于相反折叠运动的双层自锁原木.

Jae-Kyeong Kim1,2, Se Hyeok Ahn1,2, Sun-Pill Jung1,2

  • 1Department of Mechanical Engineering/Institute of Advanced Machines and Design, Seoul National University, Seoul, Korea.

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概括
此摘要是机器生成的。

这项研究介绍了一种新的原木技术,使用两层与相反的折叠运动. 这种方法显著提高了可重新配置的3D结构的曲刚性,从而实现了强大的转换.

关键词:
手臂支装置是指手臂支装置.曲硬度 曲硬度 曲硬度家具家具家具家具家具家具家具奥里加米是指原始的自动锁定自动锁定自动锁定这是一个避难所.软机器人软机器人 软机器人

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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
  • 机器人技术 机器人技术 机器人技术

背景情况:

  • 原始结构通过将2D方面折叠成3D形状来提供轻量级和可重新配置的设计.
  • 原创工程的一个关键挑战是在转换的3D配置中保持或增加曲刚度,特别是在容易曲的薄面方面.
  • 角度臂形状是各种可重新配置系统中的关键组件,但特别容易在转换过程中失去刚性.

研究的目的:

  • 开发一种基于原始创意的新方法,以提高可重新配置的3D结构的曲刚性.
  • 为了应对在原木转换过程中降低刚度的固有挑战.
  • 从最初平坦的配置中创建具有高承载能力的可变结构.

主要方法:

  • 一种新的原始画技术是通过结合两层设计的相反的折叠运动来开发的.
  • 这种方法在轴向曲过程中通过在横截面方向中抵消运动来诱导相互锁定.
  • 该方法被应用于开发原型,包括手臂支装置,家具和避难所.

主要成果:

  • 提出的方法成功地提高了原木结构的曲刚性.
  • 互锁机制有效地抵消了在转换过程中降低刚度的趋势.
  • 开发的原型展示了从平面状态转变为具有高承载能力的坚固3D形状的能力.

结论:

  • 具有相反折叠运动的双层原木方法是实现可重新配置结构中高曲刚性的有效策略.
  • 这种技术克服了传统的原木工程中的关键局限性,使得可以创建具有增强机械性能的可变结构.
  • 开发的应用突显了这种方法在创建适应性和承载性系统方面的潜力.