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Showing 1 to 9 of 9 for “"damping matrix"”.
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Computation of a Damping Matrix for Finite Element Model Updating
The characterization of damping is important in making accurate predictions of both the true response and the frequency response of any device or structure dominated by energy dissipation. The process of modeling damping matrices and experimental verification of those is challenging because damping …
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Analytical and Experimental Investigation of the Damping Matrix in Shear Building Models
… a study conducted on investigating the nature of damping matrix associated with multi degree of freedom simple shear building models. The various conventional methods of creating damping matrices in structures are summarized and numerical examples are used to illustrate the inconsistencies among …
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Investigation of the dynamic behavior of a cable-harnessed structure
… and of mass portion of an attached cable. Damping has an important role in structural design because it reduces the dynamic response, thereby avoiding excessive deflection or stress, fatigue loads, and settling times. Experimental results with some specimens indicate a clear change of …
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Modeling of the Damping Contributions of O-rings in a Submergible Six-Axis Load Cell.
… o-rings. This objective is achieved by adding a damping contribution to the existing stiffness model through an appropriate time derivative function. Data collection parameters are experimentally determined to control the noise and prevent the time derivative from becoming unstable. The effects …
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Análise dinâmica de torres e estruturas elevadas lateralmente carregadas
… is supposed to be deterministic. A viscous type damping is introduced and the general equations of the motion are obtained from the Hamilton Principle. Some considerations are done on the nature of the damping matrix, by means of specifying the percentage of critical damping, uncoupling of damped …
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Contributions to the direct time integration in wave propagation analyses
… within a time step to achieve desired numerical damping to suppress undesirable spurious oscillations of high frequencies. With the optimal CFL number, the method uses about 10% more solution effort as the standard central difference scheme but significantly improves the solution accuracy and a …
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Using superposition of undamped modes to model non-orthogonally damped systems
… structural vibration problems non-orthogonal damping leads to coupling between modes, rendering simple normal mode superposition solutions not sufficiently accurate. The flow-induced vibration of drilling and production risers used in the offshore petroleum industry is an example of such a …
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Identification of linear structural models
… properties of a structure in terms of the mass, damping, and stiffness matrices is of extreme importance. Typical problems associated with existing structural model identification methods are: (i) non-unique solutions may be obtained when utilizing only free-response measurements (unless some …
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Dynamic soil modeling in site response and soil-large pile interaction analysis
… on large pile foundations. Two new soil damping formulations are implemented in non-linear one-dimensional site response analysis for small and large strains. The first formulation introduces an approach to construct a frequency-independent viscous damping matrix which reduces the …