Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
An elastoplastic bracing system for structural vibration control
Highlights A new device is designed and presented for passive control of structural vibration. The device is deeply characterized mechanically using FE simulations. The device is modeled mathematically using Bouc-Wen hysteresis model. Different designs of the device were investigated through case studies. The device mitigates remarkably the undesirable effects of dynamic excitation.
Abstract This paper presents and investigates a new elastoplastic bracing system for passive vibration control of structures. It consists of a deformable elastoplastic metallic core comprising four Arcs around a central Ring and, therefore, the Bracing system is called the “AR-Brace”. Each arc is firmly attached tangentially to the central ring, then to the adjacent arc and finally to a corner of a structural panel, even directly or through a rigid arm. Different design variations of the AR-Brace could be obtained, by means of controlling the construction material and dimensions/thickness of its core, to passively adapt/tune the provided working ranges of stiffness/damping to specific requirements. In this work, some AR-Brace designs were studied to evaluate their efficiency. The device was thoroughly characterized mechanically using finite elements simulations and then modeled mathematically using the Bouc-Wen hysteresis model. The ability of the AR-Brace to control structural vibration and other vibration-dependent responses was investigated via numerical case studies under real and synthetic dynamics excitations. It was found that the displacement-based AR-Brace achieves a good balance between the added lateral rigidity and the provided damping, which was reflected in a remarkable mitigation of the undesirable effects of dynamic excitations, even at moderate levels of supplementary damping by the device.
An elastoplastic bracing system for structural vibration control
Highlights A new device is designed and presented for passive control of structural vibration. The device is deeply characterized mechanically using FE simulations. The device is modeled mathematically using Bouc-Wen hysteresis model. Different designs of the device were investigated through case studies. The device mitigates remarkably the undesirable effects of dynamic excitation.
Abstract This paper presents and investigates a new elastoplastic bracing system for passive vibration control of structures. It consists of a deformable elastoplastic metallic core comprising four Arcs around a central Ring and, therefore, the Bracing system is called the “AR-Brace”. Each arc is firmly attached tangentially to the central ring, then to the adjacent arc and finally to a corner of a structural panel, even directly or through a rigid arm. Different design variations of the AR-Brace could be obtained, by means of controlling the construction material and dimensions/thickness of its core, to passively adapt/tune the provided working ranges of stiffness/damping to specific requirements. In this work, some AR-Brace designs were studied to evaluate their efficiency. The device was thoroughly characterized mechanically using finite elements simulations and then modeled mathematically using the Bouc-Wen hysteresis model. The ability of the AR-Brace to control structural vibration and other vibration-dependent responses was investigated via numerical case studies under real and synthetic dynamics excitations. It was found that the displacement-based AR-Brace achieves a good balance between the added lateral rigidity and the provided damping, which was reflected in a remarkable mitigation of the undesirable effects of dynamic excitations, even at moderate levels of supplementary damping by the device.
An elastoplastic bracing system for structural vibration control
Ismail, Mohammed (Autor:in)
Engineering Structures ; 200
10.09.2019
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch