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Fluid Mechanics of Pneumatic Soft Robots
Peter Breitman1, Yoav Matia2, Amir D Gat1
1Faculty of Mechanical Engineering, Technion, Israel Institute of Technology, Haifa, Israel.
Soft Robotics
|August 22, 2020
Summary
This study models gas flow in miniaturized soft robots, combining fluid viscosity and compressibility effects. The findings offer insights into the actuation dynamics of these advanced robotic systems.
Area of Science:
- Robotics
- Fluid Dynamics
- Materials Science
Background:
- Pressurization of gas in embedded channels is a common method for soft robot actuation.
- Previous research explored fluid mechanics and viscous effects in soft robots.
- The combined effects of fluid viscosity and compressibility in miniaturized soft robots remain understudied.
Purpose of the Study:
- To develop a general model for compressible viscous flow in elastic media for miniaturized soft robots.
- To analyze the actuation dynamics of miniaturized pneumatic soft robots by considering fluid properties.
Main Methods:
- Derivation of a general model for compressible viscous flow in elastic media.
- Application of the model to periodic configurations using a long-wave approximation.
- Obtaining steady and time-dependent solutions for flow analysis.
Main Results:
- A general model for compressible viscous flow in miniaturized soft robot configurations was successfully derived.
- The long-wave approximation simplified the analysis of periodic configurations.
- Both steady and time-dependent flow solutions were obtained, enabling detailed modeling.
Conclusions:
- The derived model provides a framework for understanding fluid behavior in miniaturized soft robots.
- The study offers crucial insights into the actuation dynamics influenced by combined viscosity and compressibility.
- This work lays the foundation for designing and optimizing future miniaturized pneumatic soft robots.
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