Elastic rod origami (RodOri) for programming static and dynamic mechanical properties.

Area of Science:

• Mechanics of Materials
• Metamaterials
• Robotics

Background:

• Reconfigurable mechanical systems are crucial for advanced materials and devices.
• Existing systems often lack sufficient multistability and configurational richness.

Purpose of the Study:

• Introduce elastic rod origami (RodOri) as a novel reconfigurable mechanical system.
• Demonstrate its potential for tunable static and dynamic mechanical behaviors.

Main Methods:

• Utilize prestressed, naturally curved elastic rods as fundamental building blocks.
• Assemble rods into modular architectures to achieve multistability.
• Leverage curvature-induced mechanical instability for programmable control.

Main Results:

• A single six-rod RodOri unit can access 11 distinct configurations.
• RodOri systems exhibit extraordinary multistability and configurational richness.
• Tunable static stiffness, nonlinear force response, and dynamic behaviors like vibration filtering are achieved.

Conclusions:

• RodOri provides a highly programmable platform for static and dynamic mechanical behavior.
• Enables tailorable design strategies for reconfigurable structures, soft robotics, and adaptive materials.
• Offers a simple yet powerful approach to complex mechanical systems.