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Modal Identities for Elastic Bodies, With Application to Vehicle Dynamics and Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: It is a standard procedure to analyze a flexible vehicle in terms of its vibration frequencies and mode shapes. However, the entire mode shape is not needed per se, but two integrals of the ...
Controllability and Observability of Linear Matrix-Second-Order Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper studies the controllability and observability of the system Mq̈ + Gq̇ + Kq = Bu , where M is symmetric and positive-definite, G is skew-symmetric and K is symmetric. In all cases, ...
Dynamics of Viscoelastic Structures—A Time-Domain, Finite Element Formulation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Mathematical models of elastic structures have become very sophisticated: given the crucial material properties (mass density and the several elastic moduli), computer-based techniques can be used ...
Asymptotic Stability of Linear Stationary Mechanical Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Modeling of Linear Viscoelastic Space Structures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The GHM Method provides viscoelastic finite elements derived from the commonly used elastic finite elements. Moreover, these GHM elements are used directly and conveniently in second-order structural ...
Modal Cost Analysis for Linear Matrix-Second-Order Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Reduced models and reduced controllers for systems governed by matrix-second-order differential equations are obtained by retaining those modes which make the largest contributions to quadratic ...
Influence of Stored Angular Momentum on the Modal Characteristics of Spacecraft With Flexible Appendages
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The attitude dynamics and control of flexible spacecraft are more clearly understood if the natural frequencies of oscillation are known for these spacecraft. The influence of stored angular ...
Modal Parameter Analysis of Gyroelastic Continua
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper builds on the theory of gyroelastic dynamics presented in a recent paper by the authors. An elastic continuum with a continuous distribution of stored angular momentum ( called ...
Dynamics of Gyroelastic Continua
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper introduces the idea of distributed gyricity , in which each volume element of a continuum possesses an infinitesimal quantity of stored angular momentum. The continuum is also assumed ...