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Related Concept Videos

Free Jet01:14

Free Jet

390
Free jets describe the flow of liquid exiting a reservoir through an opening into the atmosphere without resistance. The velocity (v) of the liquid jet is derived using Bernoulli's principle and expressed as:
390

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PolyJet-Printed Bellows Actuators: Design, Structural Optimization, and Experimental Investigation.

Gabriel Dämmer1,2, Sven Gablenz2, Alexander Hildebrandt2

  • 1Institute of Polymer Product Engineering, Johannes Kepler University Linz, Linz, Austria.

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|January 27, 2021
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Summary

Pneumatic bellows actuators made with PolyJet Additive Manufacturing (AM) are ideal for robots. This study details their structural, fatigue, and relaxation behaviors for pneumatic robot applications.

Keywords:
additive manufacturingdesign for additive manufacturing (DfAM)multi-material 3D printingpneumatic actuatorpneumatic robotprinted roboticsstructural optimizationvisco-elastic

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Area of Science:

  • Robotics
  • Materials Science
  • Additive Manufacturing

Background:

  • Pneumatic bellows actuators are suitable for Additive Manufacturing (AM) due to geometric flexibility and tolerance to surface imperfections.
  • Previous work explored the structural and fatigue behavior of PolyJet™ bellows actuators.

Purpose of the Study:

  • To extend previous research by investigating the relaxation behavior of PolyJet bellows actuators.
  • To provide data for researchers and engineers on the application of these actuators in pneumatic robots.

Main Methods:

  • Simulation-driven design approach.
  • Experimental investigations of structural, fatigue, and relaxation behavior.
  • Utilized multi-material PolyJet™ technology for actuator fabrication.

Main Results:

  • PolyJet bellows actuators demonstrate suitability for AM applications.
  • Characterization of structural and fatigue properties.
  • New data presented on the relaxation behavior of these actuators.

Conclusions:

  • PolyJet bellows actuators are a viable option for pneumatic robots.
  • Understanding relaxation behavior is crucial for effective application in robotic systems.
  • The findings support the use of these actuators in complex robotic designs.