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Transient Growth Before Coupled-Mode Flutter
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Transient growth of energy is known to occur even in stable dynamical systems due to the non-normality of the underlying linear operator. This has been the object of growing attention in the ...
Measurement of Critical Velocities for Fluidelastic Instability Using Vibration Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Fluidelastic effects may be responsible for instabilities of heat exchanger tubes when the fluid flow reaches the critical velocity. The fluidelastic phenomenon is usually studied on experimental ...
The Effect of Dynamical Parameters on Precession in Rotary Drilling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Precession, which is the rolling motion of the drillstring on the walls of the borehole, is investigated by considering the various possible motions of a rotating disk in a circular hole. Due ...
Effect of Plant Interaction on Wind-Induced Crop Motion
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Plant motion due to wind affects plant growth, a phenomenon called thigmomorphogenesis. Despite intensive studies of the turbulence over plant canopies, the study of plant motion induced by wind ...
A Probabilistic Approach to the Dynamics of Wear Tests
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Wear predictions of components belonging to pressurized water reactors require impact-sliding wear tests. Some scatter of the results have often been related to the complex dynamics of the test ...
The Measurement of Fluidelastic Effects at Low Reduced Velocities Using Piezoelectric Actuators
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Fluidelastic effects which are responsible for fluidelastic instabilities may be indirectly measured through the analysis of the vibrating motion of a system under flow. In this paper, piezoelectric ...
The Multimodal Dynamics of a Walnut Tree: Experiments and Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The dynamics of a walnut tree is investigated in order to better understand the mechanical interaction of trees with wind. Experimental data on the vibrational modes of the tree are obtained, ...