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A Sufficient Condition for the Stability of Conservative Gyroscopic Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A sufficient condition for the stability of conservative gyroscopic systems with negative definite stiffness is presented. The conditions for stability are stated in terms of the definiteness of ...
Dynamics of Asymmetric Nonconservative Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work examines a linear, asymmetric lumped parameter system. Results on the qualitative behavior of a certain subclass of such systems are presented. In particular, necessary and sufficient ...
Matching Finite Element Models to Modal Data
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A technique is proposed which systematically adjusts a finite element model of a structure to produce an updated model in agreement with measured modal results. The approach suggested here is ...
Frequency Response of Nonproportionally Damped, Lumped Parameter, Linear Dynamic Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The frequency response of nonproportionally (or nonclassically or non-Raleigh) damped linear lumped mass systems is discussed here. The exact method, via Laplace transforms, is presented and the ...
Matrix Decomposition Methods in Experimental Modal Analysis
Publisher: The American Society of Mechanical Engineers (ASME)
A Note on Pole Placement of Mechanical Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An output feedback method is developed, that systematically places a desired number of poles of a closed-loop system at or near desired locations. The system is transformed to its equivalent ...
Identification of a Nonproportional Damping Matrix from Incomplete Modal Information
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In modeling structures the damping matrix is the most difficult to represent. This is even more difficult in complicated structures that are not lightly damped. The work presented here provides ...
On the Fundamental Transverse Vibration Frequency of a Free-Free Thin Beam With Identical End Masses
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Current research in vibration-based energy harvesting and in microelectromechanical system technology has focused renewed attention on the vibration of beams with end masses. This paper shows that ...
A Symmetric Inverse Vibration Problem for Nonproportional Underdamped Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper considers a symmetric inverse vibration problem for linear vibrating systems described by a vector differential equation with constant coefficient matrices and nonproportional damping. ...
Design of Nonproportional Damped Systems via Symmetric Positive Inverse Problems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper summarizes the authors’ previous efforts on solving inverse eigenvalue problems for linear vibrating systems described by a vector differential equations with constant coefficient matrices ...