Effect of Uncertainties in Default Detection through the Wave Finite Elements
Wave propagation in coupled structure is investigated in this paper.When waves propagate through a media, they will encounter changes in geometry or material. At such discontinuities due to corrosion or cracks, some of waves will be reflected and transmitted. A hybrid numerical method called ’Wave Finite Element/ Stochastic Finite Element Method’ (WFE/SFEM) is been used to take into account the variation in propagation characteristics due to the variability in mechanical and geometrical properties of coupling element. The effect of uncertain discontinuities on the reflection and transmission coefficients is evaluated and validated for 3D multimodal waveguide vs Monte Carlo simulations.
KeywordsTimoshenko Beam Couple Structure Diffusion Matrix Coupling Element Polynomial Chaos
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