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methods (FDM) and finite element methods (FEM) play an important role in solving engineering problems in computational fluid dynamics (CFD) and computational solid mechanics (CSM) [ 14 ]. While each method has its advantages and disadvantages

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the rail system Considering a standard rail such as the 60E1, modelling of the transient ultrasound problem was performed via the finite element method. The rail structure was assumed to be made from a homogeneous and isotropic linear elastic steel

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reach in many circumstances where the results are sensitive to actual mesh and other convergence criteria, in addition to the model capability. In this study, COMSOL Multiphysics, which is based on the specific Finite Element Method (FEM) [ 45 ], is used

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