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Related Concept Videos

Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

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When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
113
Plastic Deformations01:14

Plastic Deformations

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It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
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Inflatable Metamorphic Origami.

Sen Wang1, Peng Yan1, Hailin Huang1,2

  • 1School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518052, P.R. China.

Research (Washington, D.C.)
|May 25, 2023
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel inflatable metamorphic origami system. This simplified, soft chamber design enables complex sequential motions for space applications like solar arrays and antennas.

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Area of Science:

  • Robotics and Mechanical Engineering
  • Materials Science
  • Aerospace Engineering

Background:

  • Traditional deployable systems often face challenges with complexity and limited motion capabilities.
  • The need for lightweight, efficient, and versatile deployable structures in space exploration is growing.

Purpose of the Study:

  • To introduce a new class of inflatable metamorphic origami with simplified actuation.
  • To demonstrate the capability for multiple sequential motion patterns from a monolithic structure.
  • To explore applications in space deployable systems.

Main Methods:

  • Design of a soft inflatable metamorphic origami chamber with multiple sets of contiguous/collinear creases.
  • Utilizing pneumatic pressure for controlled unfolding and sequential motion.
  • Fabrication and testing of various deployable prototypes.

Main Results:

  • The metamorphic origami demonstrated sequential unfolding triggered by pneumatic pressure.
  • Successful construction of radial, circumferential, and grasping metamorphic origami prototypes.
  • Validation of the system's ability to support deployable planar solar arrays and curved-surface antennas.

Conclusions:

  • The proposed inflatable metamorphic origami offers a simplified, monolithic actuation system.
  • This novel origami is a promising foundation for lightweight, high-deploy/fold-ratio space deployable systems.
  • Potential for low-energy consumption in future space applications.