TY - GEN
T1 - Concept for a bistable composite twisting structure
AU - Lachenal, Xavier
AU - Daynes, Stephen
AU - Weaver, Paul
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84859531458&partnerID=8YFLogxK
U2 - 10.1115/smasis2011-5070
DO - 10.1115/smasis2011-5070
M3 - Conference contribution
AN - SCOPUS:84859531458
SN - 9780791854716
T3 - ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2011
SP - 573
EP - 581
BT - ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2011
PB - American Society of Mechanical Engineers
T2 - ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2011
Y2 - 18 September 2011 through 21 September 2011
ER -