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A platform for research: civil engineering, architecture and urbanism
Passive, active and semi-active devices for adaptive structure
Large space structures will be flexible due to stringent demands of lightweight and dimensional size. Their damping capacity is expected to be very low, due to material characteristics, while shape accuracy requirements are stringent in many future space missions. Vibration suppression appear then to be a critical aspect to maintain operational requisites . Adaptive structures and smart materials could represent an innovative approach to fulfill requirements but the key problem moves from structural response to control algorithms, the robustness of which influence the system structural stability. Control strategies can reduce external forces or modify mechanical (stiffness and damping) parameters. In latter case some devices, passive or active, are introduced in the structure, but neither their joint utilization in hybrid devices can assure a safe behaviour of the system. Therefore semi-active devices have been developed to overpass such problems and have shown a better performance compared with passive ones, while they have an intrinsic robustness regarding stability.
Passive, active and semi-active devices for adaptive structure
Large space structures will be flexible due to stringent demands of lightweight and dimensional size. Their damping capacity is expected to be very low, due to material characteristics, while shape accuracy requirements are stringent in many future space missions. Vibration suppression appear then to be a critical aspect to maintain operational requisites . Adaptive structures and smart materials could represent an innovative approach to fulfill requirements but the key problem moves from structural response to control algorithms, the robustness of which influence the system structural stability. Control strategies can reduce external forces or modify mechanical (stiffness and damping) parameters. In latter case some devices, passive or active, are introduced in the structure, but neither their joint utilization in hybrid devices can assure a safe behaviour of the system. Therefore semi-active devices have been developed to overpass such problems and have shown a better performance compared with passive ones, while they have an intrinsic robustness regarding stability.
Passive, active and semi-active devices for adaptive structure
Passive, aktive und semi-aktive Geräte für adaptive Strukturen
Borgonovi, C. (author) / Cesarini, E. (author)
1994
5 Seiten, 2 Bilder, 12 Quellen
Conference paper
English
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