摘要：We investigate the numerical dispersive properties of nonconforming nite element methods to solve the two and three dimensional elastodynamic equations. The study is performed by deriving and analysing the dispersion relations and by evaluating the derived quantities, such as the dimension-less phase and group velocities. Also the phase di erence between exact and numerical solutions is investigated. The method studied, which yields a linear spatial approximation, demonstrates to be less dispersive than conforming bilinear nite element methods yielding the same spatial degree of approximation in the two cases shown herein.
