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Characteristics of a Tape Spring Hinge with Potential Space Applications
Presented by:
Guoxing Lu
Wanli Chen
Swinburne University of Technology
Guoxing Lu
Swinburne University of Technology
A tape spring hinge is a straight, thin-walled strip with a curved cross-section. It can be used as a deployment actuator by forming an elastically deformed region in which strain energy is stored and is able to self- deploy by releasing stored strain energy. To date, the studies on such a hinge have mainly focused on evaluating performance and dynamic responses of tape spring hinge in the scenario of free deployment. In this paper, a concept for the deployment of tape spring hinge is presented. To achieve a controllable deployment, thin elastic strings made of rubber are attached to both sides of a folded hinge and they act as energy storing and dissipating devices. In this configuration, when the hinge starts to unfold, the strain energy stored in the folded region is simultaneously converted into kinetic energy to the hinge body and strain energy to the strings. Therefore, this process provides damping effects. Deployment can be controlled through combinations of tape spring hinge and strings. The finite element analysis is conducted by means of commercial package ABAQUS to simulate dynamic responses of the hinge. Analysis of the effects of adding elastic strings into the system on the performance of the tape spring hinge is examined. Then a physical experiment is set up to validate numerical results by using high speed cameras. The proposed concept could be implemented as a strategy to control tape spring behaviour.
Category:
Space engineering & technology, including Cubesats
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