(DFT), Fast Fourier Transform (FFT) Free vibrations of one-dimensional continua: Models, solutions to the one-dimensional wave equation, bending vibrations of beams Forced vibrations of one-dimensional continua: [...] residuals, d'Alembert-Lagrange principle, trial (shape) functions Discretization of simple continua using the Finite Element Method (FEM): FEM steps, axial and torsional vibrations of rods, bending vibrations
https://www.ltmd.uni-rostock.de/en/lectures/structural-dynamics/