Suppression of Random Vibration in Concrete and Composite Concrete Floor PDF Download
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Author: Mohammad Nurul Hoque
Publisher: LAP Lambert Academic Publishing
ISBN: 9783848425396
Category :
Languages : en
Pages : 84
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Book Description
A composite concrete floor is proposed in this book to suppress stationary random vibration in concrete structures using a compound vibration absorber named vibration damping compound (VDC). While the traditional vibration absorber can damp down the vibration mainly at the pre-tuned mode of the primary structure, active damping is generated by the proposed VDC to damp down all resonant modes of interest of the vibrating structure and the spatial average mean square motion of the vibrating structure can be minimized. Only one absorber and one feedback signal are required to achieve vibration suppression of a concrete structure under stationary random excitation. A special composite concrete floor is designed such that all vibration modes of the concrete structures become critically damped. It is proved analytically that the proposed VDC damps the vibration of the entire structure instead of just the attachment point of absorber.
Author: Mohammad Nurul Hoque
Publisher: LAP Lambert Academic Publishing
ISBN: 9783848425396
Category :
Languages : en
Pages : 84
Get Book Here
Book Description
A composite concrete floor is proposed in this book to suppress stationary random vibration in concrete structures using a compound vibration absorber named vibration damping compound (VDC). While the traditional vibration absorber can damp down the vibration mainly at the pre-tuned mode of the primary structure, active damping is generated by the proposed VDC to damp down all resonant modes of interest of the vibrating structure and the spatial average mean square motion of the vibrating structure can be minimized. Only one absorber and one feedback signal are required to achieve vibration suppression of a concrete structure under stationary random excitation. A special composite concrete floor is designed such that all vibration modes of the concrete structures become critically damped. It is proved analytically that the proposed VDC damps the vibration of the entire structure instead of just the attachment point of absorber.
Author: Mohammad Nurul Hoque
Publisher: LAP Lambert Academic Publishing
ISBN: 9783846540107
Category :
Languages : en
Pages : 112
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Book Description
The generation of the impact sound by the act of the human walk involves two factors, the character of the footfall and the shape of the induced floor vibration. High levels of vibrations can occur in floor systems due to excitation from human activities such as walking and aerobics. In building floors, excessive vibrations are generally not a safety concern for building floor system but a cause of annoyance and discomfort. The footfall noise is created by the impact excitation where the character of the footfall depends on the foot-ware: the heels and the frequencies of the footfall. The shape of the floor deflection depends rather on the geometrical walking pattern and construction of the floor structure. Two types of floors are used for this experiment (1) Profiled Steel Sheet Concrete Floor (PCF) and Composite Concrete Floor (CCF). Since the excitation is assumed to be deterministic, differences between the excitation masses, acting forces and damping are determine from Bruel & Kjaer vibration analyzer machine. The goal of this investigation is to determine the differences of the floor nature by human effect depending on various positions on floors.
Author: Mohammad Nurul Hoque
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659161902
Category :
Languages : de
Pages : 628
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Book Description
This book is about concrete floor and development a composite concrete floor, measure vibration serviceability. Composite structures are created as a result of connecting two or more structural components, which are often made from materials with various properties. Composite concrete floors, used in civil engineering, are typical example of such structures. Structures of this kind are usually used as elements of floors in general and industrial building. This book covers introduction, literature review and experimental analysis of such kind of floors.
Author: Mohammad Nurul Hoque
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659335310
Category :
Languages : en
Pages : 184
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Book Description
This book covers research in the floor vibration field and development a composite concrete floor to reduce vibrations in concrete constructions. Whether a floor is developed as "less vibrated" or "highly vibrated" by the occupants is an interaction of (a) the dynamic properties of the floor and of (b) human vibration perception. This book also concerns floor vibrations, describes the nature of floor vibrations and provides options for avoiding it through design, or in the case of existing buildings, reducing or eliminating it through alterations. In this book describes an investigation into the effects of raised access floors and future works of this area on the vibration serviceability of concrete floors. The development of a new composite concrete floor and modal testing facility based on electrodynamics shaker excitation, which was capable of producing high quality estimates of the modal properties of full-scale floor structures. This was subsequently utilized to determine the modal properties of two full-scale floor structures, first concrete floor with profiles steel sheet (PSS) and secondly concrete floor with PSS and vibration damping compound (VDC).The vibration damping co
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 400
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Book Description
Author: ACI Committee 302
Publisher: American Concrete Institute
ISBN: 0870311514
Category : Concrete construction
Languages : en
Pages : 81
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1038
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Jerome F. Hajjar
Publisher:
ISBN: 9780784406168
Category : Building, Iron and steel
Languages : en
Pages : 0
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Book Description
This collection contains 85 papers presented at the Composite Construction in Steel and Concrete IV Conference, held in Banff, Alberta, Canada, May 28-June 2, 2000.
Author:
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 506
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Book Description
Author:
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages : 616
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Book Description
