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A Comparison of the Effects of Nonlinear Damping on the Free Vibration of a Single-Degree-of-Freedom System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This article concerns the free vibration of a single-degree-of-freedom (SDOF) system with three types of nonlinear damping. One system considered is where the spring and the damper are connected ...
Varying the Stiffness of a Beam-Like Neutralizer Under Fuzzy Logic Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Vibration neutralizers are effective vibration control devices at a single frequency. If they can compensate for drift in the excitation frequency by adjusting their stiffness the performance can ...
Modelling a Structural-Acoustic Coupled System with an Equivalent Lumped Parameter Mechanical System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes the way in which a structural acoustic coupled system can be modelled using an equivalent lumped parameter mechanical model. The impedance-mobility approach is first used ...
Mechanisms of Noise Transmission through Helicopter Gearbox Support Struts
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Helicopter gearbox support struts are structural members designed to take large compressive and tensile mechanical loads. They also act as vibration transmission paths connecting the major noise ...
Noise Propagation Through Helicopter Gearbox Support Struts—An Experimental Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A dominant source of noise in a helicopter cabin is the meshing of the gears in the main rotor gearbox. The main structural noise transmission path from this gearbox to the cabin is through ...
The Effect of Dual-Rate Suspension Damping on Vehicle Response to Transient Road Inputs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The acceleration response of road vehicles to shock inputs from road irregularities such as bumps and hollows is an important consideration in the design of vehicle suspensions and damping ...
Comparing the Performance of Optimally Tuned Dynamic Vibration Absorbers With Very Large or Very Small Moment of Inertia
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this article, the performance of a two degree-of-freedom dynamic vibration absorber (DVA) with very large or very small moment of inertia is studied. Although it has been shown previously ...
An Experimental Investigation into the Semi-Active and Active Control of Longitudinal Vibrations in a Large Tie-Rod Structure
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An experimental study into the use of one semi-active and two active control devices employed to attenuate the transmission of longitudinal vibrations on a large tie-rod structure is described. ...