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Showing 1 to 8 of 8 for “"spectral finite element"”.
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Spectral finite element modelling and damage identification of beam-like structures using linear and nonlinear guided waves
… guided wave for damage detection, the efficient spectral finite element (SFE) method is used to simulate the guided wave propagation in beams for both isotropic and composite materials. An SFE crack element is developed to simulate crack-wave interaction and the guided wave mode-conversion effect …
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Verification and validation of the geometrically exact beam theory with Legendre spectral finite elements for wind turbine blade analysis, A
… on linear Euler-Bernoulli beam theory. A new finite element beam model, BeamDyn, which is based on the geometrically exact beam theory (GEBT) has been proposed to replace the incumbent wind turbine blade model in FAST. In the work reported here, GEBT and its spectral finite element …
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Spectral hulls: a degree of freedom reducing hp-strategy in space/time
Reducing the degrees of freedom (DOF) of modern finite element methods is investigated using a systematic hp-process. The elements are first agglomerated (h-coarsening) to form convex/concave hulls and then the polynomial degree of the hull basis, is increased (p-refinement). Compared to the …
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Performance of Algebraic Multigrid for Parallelized Finite Element DNS/LES Solvers
The implementation of a hybrid spectral/finite-element discretization on the unsteady, incompressible, Navier-Stokes equations with a semi-implicit time-stepping method, an explicit treatment of the advective terms, and an implicit treatment of the pressure and viscous terms leads to an algorithm …
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Hybrid atomistic-continuum formulations and the moving contact line problem
… molecular dynamics, and from the continuum side, spectral/finite element solutions. Molecular dynamics has been chosen for its ability to capture all the underlying physics without the need for modelling assumptions. The continuum solution techniques chosen represent the best compromise between …
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Investigation of Linear and Nonlinear Torsional Guided Waves in Hollow Circular Cylinders for Damage Detection
… model using one-dimensional time-domain spectral finite element with cracked element is presented in Chapter 2. This chapter mainly focuses on linear features of guided wave, such as scattering and mode conversion phenomena. The results show that the proposed cracked model has good …
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A study on the behaviour of guided wave propagation in utility timber poles
… Accordingly, a semi analytical method, namely, Spectral finite element method (SFEM) is employed to model the timber pole with the actual boundary conditions together with the impact location and orientation to illustrate the propagation of different kind of waves and branches. Even though SFEM …
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Thermomechanics of helical strands and helical-fiber-reinforced rods
… careful validation. We conduct a full-fledged finite element analysis of the bending of a single layered helical strand, with internal friction and pretension. The effects of the pretension level, bending amplitude, and the friction coefficient on the effective bending stiffness are elucidated. …