title: On advantages of derivation of exact dynamical stiffness matrices from boundary integral equations.
abstract: Dynamical stiffness matrices are broadly used for solving problems in wave propagation in elastic structures. For elastic waveguides that support both propagating and evanescent waves, the standard use of transfer matrices to obtain their dynamical stiffness matrix may cause problems in computations. In this letter to the editor, an advanced way to derive dynamical stiffness matrices is proposed and exemplified in the classical Bernoulli-Euler beam theory.
authors: Department of Mechanical and Manufacturing Engineering, Aalborg University, Pontoppidanstreade 101, Aalborg East 9220, Denmark.
authors: Alf
authors: A
authors: Søe-Knudsen
mesh_terms: D000162:Acoustics; D004548:Elasticity; D008962:Models, Theoretical; D009038:Motion; D013016:Sound