FEM-BEM Numerical Procedure for Insertion Loss Assessment of an Engine Beauty Cover

FEM-BEM Numerical Procedure for Insertion Loss Assessment of an Engine Beauty Cover

In this paper a FEM-BEM numerical methodology to simulate soundproofing effects generated by an engine beauty cover was developed. Indeed, the engine beauty cover is not only an aesthetic element but also accomplishes the specific function of soundproofing and thus it is important to calculate the noise attenuation it can provide. The methodology was implemented by using the commercial software...

Convection-adapted BEM-based FEM

We present a new discretization method for homogeneous convectiondiffusion-reaction boundary value problems in 3D that is a non-standard finite element method with PDE-harmonic shape functions on polyhedral elements. The element stiffness matrices are constructed by means of local boundary element techniques. Our method, which we refer to as a BEM-based FEM, can therefore be considered a local ...

BEM-FEM coupling for wave-structure interaction

We present a numerical method, based on a coupling of finite elements and boundary elements, to solve a fluid–solid interaction problem posed in the plane. The boundary unknowns involved in our formulation are approximated by a spectral method. We provide error estimates for the Galerkin method and present numerical results that illustrate the accuracy of our scheme.

Model reduction for efficient FEM/BEM coupling

Model reduction techniques seek approximate solutions of a problem with a large number of DOFs within a subspace of small dimension. Component Mode Synthesis (CMS) methods form a large class of reduction methods where the subspace is selected a priori. Introducing a posteriori error estimation and iterative correction significantly extends the range of applications of reduction methods. The pap...

FEM-BEM Couplings without Stabilization