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Related Experiment Video

Updated: Feb 1, 2026

Performing Microscope-Mounted Y-Shaped Cutting Tests

Performing Microscope-Mounted Y-Shaped Cutting Tests

Published on: January 20, 2023

Shape-morphing architected sheets with non-periodic cut patterns.

Paolo Celli¹, Connor McMahan, Brian Ramirez

¹Department of Mechanical and Civil Engineering, California Institute of Technology, Pasadena, CA 91125, USA. pcelli@caltech.edu daraio@caltech.edu.

|December 5, 2018

Summary

This summary is machine-generated.

Architected elastic sheets with non-periodic cut patterns can be controllably buckled into 3D shapes. This scalable method fabricates complex structures from flat materials, enabling shape retention with elastic-plastic properties.

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Area of Science:

Materials Science
Mechanical Engineering
Physics of Soft Matter

Background:

Architected materials offer tunable mechanical properties.
Shape morphing in thin sheets is a key challenge in materials engineering.
Controlling out-of-plane deformation is crucial for fabricating 3D structures.

Purpose of the Study:

To investigate the out-of-plane shape morphing of single-material elastic sheets with architected cut patterns.
To demonstrate the ability to create 3D shapes like domes and wrinkles using non-periodic patterns.
To explore shape retention using elastic-plastic materials.

Main Methods:

Fabrication of elastic sheets with architected cut patterns.
Experimental investigation of boundary-driven buckling modes.
In-plane kinematic analysis to understand geometric frustration.
Extension of the study to elastic-plastic materials.

Main Results:

Non-periodic cut patterns induce global buckling modes in elastic sheets.
Sheets deform into 3D shapes such as domes and wrinkle patterns when pulled.
Geometric frustration arising from non-periodicity is identified as a key factor.
Shape retention is achieved by extending the methodology to elastic-plastic materials.

Conclusions:

Architected cut patterns provide a scalable route to fabricate 3D objects with nonzero Gaussian curvature from flat sheets.
The study demonstrates precise control over shape morphing through geometric design.
The findings have implications for the design of deployable structures and soft robotics.