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Related Experiment Video

Updated: Jan 8, 2026

Fabrication of Soft Pneumatic Network Actuators with Oblique Chambers

Fabrication of Soft Pneumatic Network Actuators with Oblique Chambers

Published on: August 17, 2018

Pneumatically controlled lattices with tunable mechanical behavior.

Xiaoheng Zhu¹, Yucong Hua¹, Dengge Jin¹

¹Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA, USA.

Communications Engineering

|December 13, 2025

Summary

This summary is machine-generated.

Pneumatic actuators reconfigure lattice structures, enhancing buckling strength by over 120% and improving impact mitigation. This versatile strategy boosts structural performance under static and dynamic loads.

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Area of Science:

Materials Science
Mechanical Engineering
Structural Engineering

Background:

Lattice structures are susceptible to buckling, a failure mode limiting their applications.
Buckling tendency in struts correlates with local nodal connectivity.
Current methods for enhancing lattice performance are often topology-specific.

Purpose of the Study:

To introduce a pneumatic actuation strategy for actively tuning lattice structure mechanical behavior.
To demonstrate reconfigurable nodal connectivity for modulating stiffness and buckling response.
To enhance structural performance under static and dynamic loading conditions.

Main Methods:

Embedding pneumatic actuators within lattice structures.
Selectively inflating actuators into spatial patterns to alter nodal connectivity.
Applying varying air pressure signals to tune post-buckling behavior.

Main Results:

Achieved a 121.6% improvement in buckling strength with reinforced pneumatic patterns.
Demonstrated programmable tuning of post-buckling behavior via air pressure control.
Reduced peak acceleration by 50.9% for enhanced impact mitigation.

Conclusions:

Pneumatic actuation offers a versatile method to enhance lattice structure performance.
The strategy is broadly applicable across various lattice architectures.
This approach improves structural integrity and impact resistance without material constraints.