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When designing a water slide, controlling the speed of water flow is crucial for rider safety while maintaining an exciting experience. As water flows down the slide, gravity causes it to accelerate, with its speed at the bottom depending on the height from which it starts. The higher the slide, the more potential energy the water has at the top, which is converted into kinetic energy as it descends, increasing its speed.
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Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
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Kirigami-Inspired Inflatables with Programmable Shapes.

Lishuai Jin1,2, Antonio Elia Forte2,3, Bolei Deng2

  • 1Department of Mechanics, Tianjin University, Tianjin, 300350, China.

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Summary
This summary is machine-generated.

Researchers used kirigami principles to create inflatable shapes that mimic target forms. By adjusting kirigami patterns and using optimization, they achieved precise shape control for advanced mechanical metamaterials.

Keywords:
inverse designkirigamimechanical metamaterialsprogrammable inflatablesshape shifting

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Area of Science:

  • Mechanical Engineering
  • Materials Science
  • Soft Robotics

Background:

  • Kirigami, the art of paper cutting, inspires novel mechanical metamaterials.
  • Stretchable materials with programmable shapes are crucial for advanced applications.

Purpose of the Study:

  • To design kirigami-based inflatables capable of mimicking specific target shapes.
  • To investigate the control of inflated shapes by tuning kirigami geometric parameters.

Main Methods:

  • Embedding kirigami patterns into elastomeric membranes.
  • Utilizing an optimization algorithm to identify optimal kirigami parameters for shape transformation.
  • Selectively manipulating unit parameters for multi-scale feature reproduction.

Main Results:

  • Demonstrated control over inflatable shapes by adjusting kirigami geometric parameters.
  • Identified optimal parameters for transforming kirigami inflatables into a family of target shapes.
  • Achieved accurate shape mimicking through selective manipulation of kirigami units.

Conclusions:

  • Kirigami principles offer a viable method for designing shape-morphing inflatables.
  • Geometric parameter tuning and optimization enable precise control over inflatable shapes.
  • The tessellated nature of kirigami allows for multi-scale shape control and accurate target mimicking.