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相关概念视频

Simple Trusses01:21

Simple Trusses

1.7K
A truss is a structural framework consisting of slender members connected at joints, designed to support external loads while minimizing material usage and weight. Simple trusses are a type of planar truss where all members lie within a single two-dimensional plane.
The most basic planar truss is a simple truss with three members arranged in a triangular formation. This triangular truss is inherently stable and rigid due to its geometry, making it an ideal starting point for creating more...
1.7K
Space Trusses: Problem Solving01:29

Space Trusses: Problem Solving

584
A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. Due to its adaptability and capacity to withstand complex loads, the space truss is widely used in various construction projects.
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...
584
Space Trusses01:25

Space Trusses

782
A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. The space truss is widely used in various construction projects due to its adaptability and capacity to withstand complex loads.
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
782
Introduction to Structures01:30

Introduction to Structures

1.0K
A structure is defined as a system of interconnected members designed to support or transfer forces and successfully withstand the loads acting on them. The internal forces of a structure can be determined by decomposing the structure and analyzing the free-body diagrams of the individual members or of a combination of members. This helps in understanding the structural elements' behavior and ensuring that the structure is stable and can withstand the subjected loads.
There are three main...
1.0K
Zero-Force Member01:30

Zero-Force Member

1.4K
A truss is a framework that comprises slender members connected at their ends by joints. Trusses are widely used in engineering and architecture to stabilize and strengthen structures like bridges, roofs, and towers. Truss members are designed to carry loads through tension and compression, enabling the truss to withstand external forces.
One critical concept in truss design is the idea of zero-force members. It refers to a truss member that experiences no stress under loading conditions.
1.4K
Method of Joints01:30

Method of Joints

782
The method of joints is a commonly used technique to analyze the forces in structural trusses. The method is based on the principle of equilibrium, which assumes that the truss members are connected by frictionless pins. The forces at each joint can be determined by considering the equilibrium of the forces acting on that joint.
Since plane truss members are in the same plane, each joint is subjected to a coplanar and concurrent force system. To apply the method of joints, the first step is to...
782

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相关实验视频

Updated: Jun 24, 2025

Design and Synthesis of a Reconfigurable DNA Accordion Rack
07:44

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Published on: August 15, 2018

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易于启动的多兼容的结构结构结构,具有规定的重新配置.

Lin Ai1, Shukun Yin2,3, Weixia He3

  • 1The Institute of Technological Sciences, Wuhan University, Wuhan, Hubei, 430072, China.

Nature communications
|June 7, 2024
PubMed
概括

研究人员开发了具有有限稳定状态的多兼容性托架结构,以进行受控的重新配置. 这种方法可以使用简单,轻量级的执行器进行精确的变形,克服现有的多稳定设计的局限性.

更多相关视频

Design and Fabrication of an Elastomeric Unit for Soft Modular Robots in Minimally Invasive Surgery
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Design and Fabrication of an Elastomeric Unit for Soft Modular Robots in Minimally Invasive Surgery

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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles

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相关实验视频

Last Updated: Jun 24, 2025

Design and Synthesis of a Reconfigurable DNA Accordion Rack
07:44

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Published on: August 15, 2018

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Design and Fabrication of an Elastomeric Unit for Soft Modular Robots in Minimally Invasive Surgery
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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
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科学领域:

  • 材料机械学 材料机械学
  • 结构工程 结构工程
  • 机器人技术 机器人技术 机器人技术

背景情况:

  • 多稳定结构提供了能源效率和减少了执行需求.
  • 现有的设计往往有太多的稳定状态或缺乏刚性.
  • 需要新的方法来控制变形结构的重新配置.

研究的目的:

  • 设计具有有限数量的规定的稳定状态 (多兼容结构) 的多稳定托架结构.
  • 开发一个全周期的设计方法,以轻量化执行的变形结构.
  • 为了证明这些结构在诸如可变刚度抓器等领域的实际应用.

主要方法:

  • 在多个规定的状态下定义了架结构兼容性的约束.
  • 开发了一种设计具有有限冗余稳定状态的多兼容结构的方法.
  • 探索了最小能量路径,并设计了用于重新配置的简单拉动执行.
  • 制造原型以验证设计和执行方法.

主要成果:

  • 成功设计和制造了多兼容的结构结构.
  • 通过使用简单,轻量级的执行来证明规定的重新配置.
  • 实现受控的形态变化,具有有限的,明确的稳定状态.
  • 应用了一个四元稳定结构来创建一个可变刚度的抓手.

结论:

  • 拟议的全周期设计方法使得可以创建具有可控多稳定性的变形结构.
  • 这种方法克服了现有的多稳定设计的局限性,提供了增强的刚性和驱动可行性.
  • 开发的多兼容结构对于需要轻量级,可重新配置的系统的实际应用具有重大潜力.