Abstract
A novel type of morphing twisting structure capable of large deformations is investigated. The structure consists of two flanges subject to a uniform distributed bending moment along their length and joined to introduce two stable twisted configurations. These equilibria are positioned symmetrically with regards to the vertical axis of the device and the structure can be twisted between these configurations by a snap-through action. By tailoring the design parameters of the structure, different twist angles and snap-through moments can be achieved. An analytical model and finite element model (FEM) are presented. A prototype made of carbon-fibre reinforced plastic (CFRP) was manufactured and tested. Agreement in terms of angle of twist, axial force and stiffness is found. Moreover, comparison between the two models confirms their validity in terms of snap-through moment, torsional stiffness and strain energy levels. The influence of the lay-up employed and design parameter is also investigated. Potential applications include deployable and morphing structures.
Translated title of the contribution | Concept For a Bistable Composite Twisting Structure |
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Original language | English |
Title of host publication | ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Scottsdale, AZ |
Pages | 573 - 581 |
Number of pages | 9 |
DOIs | |
Publication status | Published - 18 Sept 2011 |
Bibliographical note
Name and Venue of Event: Firesky Resort & Spa, Scottsdale, AZConference Organiser: ASME
Other identifier: SMASIS2011-5070
Other: SMASIS2011-5070