TY - GEN
T1 - Stiffness shaping for zero vibration fluidic flexible matrix composites
AU - Lotfi-Gaskarimahalle, Amir
AU - Shan, Ying
AU - Li, Suyi
AU - Rahn, Christopher D.
AU - Bakis, Charles E.
AU - Wang, K. W.
PY - 2008
Y1 - 2008
N2 - This paper studies semi-active vibration control using Fluidic Flexible Matrix Composites (F2MC) as variable stiffness structures. The apparent stiffness of F2MC tubes can be changed using a variable orifice valve. With fiber reinforcement, the volume inside the tube may change with external load. With an open valve,the liquid is free to move in or out of the tube, so the apparent stiffness will not changed. When the valve is closed, the high bulk modulus liquid is confined, which resists the volume change and causes the apparent stiffness of the tube to increase. The equations of motion of an F2MC-mass system is derived using a 3D elasticity model and the energy method. A reduced order model is then developed for fully-open or fully-closed valves. A Skyhook valve that cycles the valve between open and closed, asymptotically decays the vibration. A Zero Vibration (ZV) Stiffness Shaping technique is introduced to suppress the vibration in finite time. A sensitivity analysis of the ZV Stiffness Shaper studies the robustness to parameteric uncertainties.
AB - This paper studies semi-active vibration control using Fluidic Flexible Matrix Composites (F2MC) as variable stiffness structures. The apparent stiffness of F2MC tubes can be changed using a variable orifice valve. With fiber reinforcement, the volume inside the tube may change with external load. With an open valve,the liquid is free to move in or out of the tube, so the apparent stiffness will not changed. When the valve is closed, the high bulk modulus liquid is confined, which resists the volume change and causes the apparent stiffness of the tube to increase. The equations of motion of an F2MC-mass system is derived using a 3D elasticity model and the energy method. A reduced order model is then developed for fully-open or fully-closed valves. A Skyhook valve that cycles the valve between open and closed, asymptotically decays the vibration. A Zero Vibration (ZV) Stiffness Shaping technique is introduced to suppress the vibration in finite time. A sensitivity analysis of the ZV Stiffness Shaper studies the robustness to parameteric uncertainties.
UR - http://www.scopus.com/inward/record.url?scp=78149388721&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78149388721&partnerID=8YFLogxK
U2 - 10.1115/SMASIS2008-501
DO - 10.1115/SMASIS2008-501
M3 - Conference contribution
AN - SCOPUS:78149388721
SN - 9780791843314
SN - 9780791843321
T3 - Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS2008
SP - 409
EP - 417
BT - Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS2008
T2 - ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS2008
Y2 - 28 October 2008 through 30 October 2008
ER -