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Showing 1 to 10 of 10 for “"Timoshenko beams"”.
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The inverse medium problem for Timoshenko beams and frames : damage detection and profile reconstruction in the time-domain
… one-dimensional flexural components endowed with Timoshenko-theory assumptions. The probed structures are subjected to user-specified transient excitations: we use the complete waveforms, recorded directly in the time-domain at only a few measurement stations, to drive the profile reconstruction …
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Synthesis of dynamic Green's functions for distributed parameter systems
… A number of applications are examined, including Timoshenko beams, beam-stiffened thin rectangular plates, and sandwiched beams and plates.
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Flexible dynamics of floating wind turbines
… the tower is represented as a series of uniform Timoshenko beams connected to each other. The deflections of the tower are solved analytically in each beam while the mass, damping and stiffness coming from the rotor, the floating platform and the mooring lines are taken into account via …
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Structural vibration damping using lightweight, low-wave-speed media
… the structural modes of cylindrical shells and Timoshenko beams and attain predictions in good agreement with measurements. For more complicated geometries, it is often necessary to employ a finite element model to predict the dynamics of structures. But inclusion of LWSM into a finite element …
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Flexural-Torsional Coupled Vibration of Rotating Beams Using Orthogonal Polynomials
… flexural-torsional coupled vibration of rotating beams using the Rayleigh-Ritz method with orthogonal polynomials as basis functions is studied. The present work starts from a review of the development and analysis of four basic types of beam theories: the Euler-Bernoulli, Rayleigh, Shear and …
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Intricate dynamics and hydrodynamic frictional losses of the piston-ring assembly in internal combustion engines
… approach. Curved beam Finite Element method for Timoshenko beams was used to account for the longitudinal and in-plane transverse deformations of the rings. Furthermore, the interaction between piston skirt, ring running surface, and the lubricating oil film was included in order to predict …
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Modeling Vehicle and Rail Vibrations Due to the Passage of High Speed Trains Using Coupled Traveling and Stationary Finite Element Models
… bogies, and wheels. The track is modeled using Timoshenko beams for the rail so the shear and rotational effects on the rail due to the combined vertical and longitudinal forces exerted by the train onto the rail can be considered. Shape functions are implemented to determine the equivalent …
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Mathematics of double-walled carbon nanotube model: Asymptotic spectral and stability analysis
… can be modeled as a system of two nested Timoshenko beams connected through the distributed Van der Waals forces. The model is given as a coupled system of four partial differential equations of the hyperbolic type equipped with a four-parameter family of dynamical boundary conditions. We …
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Non-invasive characterization of bone tissue and modeling of bone at micron and sub-micron levels
… software Abaqus by representing fibers as Timoshenko beams. We generate a random arrangement of fibers by using a Poisson process. We investigate the effects of fiber orientation, void volume fraction and window size on the constitutive elastic response of such a beam network. We show that …
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The calculation of noise from railway bridges and viaducts
… modelling the track-bridge system as two finite Timoshenko beams continuously connected by a resilient layer. This has resulted in a power input calculation which includes the important effects of coupling between the rail and bridge and the resonance effects of the finite length of a bridge. …