Topic
Modal testing
About: Modal testing is a research topic. Over the lifetime, 4047 publications have been published within this topic receiving 64772 citations.
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TL;DR: In this paper, an empirical mode decomposition (EMD)-based stochastic subspace identification procedure utilizing operational vibration measurements is presented. But, the method is not suitable for nonstationary signals.
114 citations
TL;DR: In this paper, the authors proposed an output-only modal analysis method to extract mode shapes and natural frequencies of a structure based on an approach with a single-degree-of-freedom in the time domain.
113 citations
TL;DR: A nonlinear modal analysis approach based on the invariant manifold method proposed earlier by Boivin et al. as discussed by the authors is applied in this paperto perform the dynamic analysis of a micro switch, which is modeled as a clamped-clamped microbeam subjected to a transverseelectrostatic force.
Abstract: A nonlinear modal analysis approach based on the invariant manifoldmethod proposed earlier by Boivin et al. [10] is applied in this paperto perform the dynamic analysis of a micro switch. The micro switch ismodeled as a clamped-clamped microbeam subjected to a transverseelectrostatic force. Two kinds of nonlinearities are encountered in thenonlinear system: geometric nonlinearity of the microbeam associatedwith large deflection, and nonlinear coupling between two energydomains. Using Galerkin method, the nonlinear partial differentialgoverning equation is decoupled into a set of nonlinear ordinarydifferential equations. Based on the invariant manifold method, theassociated nonlinear modal shapes, and modal motion governing equationsare obtained. The equation of motion restricted to these manifolds,which provide the dynamics of the associated normal modes, are solved bythe approach of nonlinear normal forms. Nonlinearities and the pull-inphenomena are examined. The numerical results are compared with thoseobtained from the finite difference method. The estimate for the pull-involtage of the micro device is also presented.
113 citations
15 Jan 2001-Philosophical transactions - Royal Society. Mathematical, physical and engineering sciences
TL;DR: In this paper, the state of the art of modal testing or experimental modal analysis of rotating structures is surveyed, when applied to ordinary, nonrotating structures, and modal tests are considered to be w...
Abstract: This paper surveys the state of the art of modal testing or experimental modal analysis of rotating structures. When applied to ordinary, nonrotating structures, modal testing is considered to be w...
112 citations
TL;DR: In this article, a full-scale footbridge, its numerical modelling and dynamic testing was performed using state-of-the-art procedures available nowadays for finite element modelling and frequency response function based modal testing.
112 citations