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Narrowband feedback for narrowband control of resonant and non-resonant vibration
(2016-08-01)
This paper presents a simple feedback methodology that uses second order filters to control narrowband resonant and non-resonant vibration of a structural system. In particular, a single degree-of-freedom system is studied ...
Influence of the impact of a rigid rod on the coffee fruits detachment by mechanical vibrations
(Revista Agrarian, 2019)
On the detailed design of a quasi-zero stiffness device to assist in the realisation of a translational Lanchester damper
(2022-02-01)
A translational Lanchester damper is a device that adds damping to a structure at a point using a series combination of a viscous damper and a mass. The problem in the practical realisation of such a device is that a ...
Bancada para experimentos didáticos de vibrações
(Universidade Tecnológica Federal do ParanáGuarapuavaBrasilEngenharia MecânicaUTFPR, 2018-12-03)
The subject of mechanical vibrations is very important for the formation of a mechanical engineer. However at UTFPR-GP there’s a need for practical activities on the subject. In this work was added the basic knowledge on ...
Mechanical vibration preserves bone structure in rats treated with glucocorticoids
(ELSEVIER SCIENCE INC, 2010)
Glucocorticoids are an important cause of secondary osteoporosis in humans, which decreases bone quality and leads to fractures. Mechanical stimulation in the form of low-intensity and high-frequency vibration seems to be ...
Fundamental analysis on the intentional use of nonlinear stiffness in some dynamical systems
(2019-01-01)
Although nonlinearity in dynamical systems have been of concern for many years due to its unpredictable effects, researchers and engineers have recently begun to incorporate it into mechanical and mechatronic devices to ...
Active Vibration Control Using On-line Algebraic Identification and Sliding Modes
(Revista Computación y Sistemas; Vol. 13 No.3, 2010-02-18)
Abstract. In this paper is described the application of an on-line algebraic identification methodology for parameter and signal estimation in vibrating systems. The algebraic identification is employed to estimate the ...
Desempenho de smartphone na avaliação de vibrações em uma motorroçadora lateral
(Universidade Federal de Santa MariaBrasilUFSMCentro de Tecnologia, 2021-07-10)
The brush cutters are very common tools in the entire world. They are used both in domestic services or amateur gardening, as well as in professional gardening services or semi-mechanized harvests. These tasks are easier ...
Stiffness nonlinearity in structural dynamics: Our friend or enemy?
(2017-04-25)
The effects of nonlinearity, particularly stiffness nonlinearity, has been of concern to structural engineers for many years. Primarily this has been because this type of nonlinearity can cause unpredictable dynamics, and ...