Technical Paper
Full Vehicle Electromagnetic Simulation Using the Hybrid Finite Element Boundary Integral Approach
2011-10-04
2011-36-0085
The finite element method (FEM) can be used as an analysis tool in automotive electromagnetic engineering and recently new technologies such as Domain Decomposition Method (DDM) were employed to simulate very large field structures such as a whole vehicle. A FEM solver offers numerous advantages over other numerical methods, such as method of moments (MoM) and finite difference time domain (FDTD), because it has the ability to handle complex heterogeneous and anisotropic materials which is often used inside vehicles, also providing a very precise representation of complex geometries via high order tetrahedral elements. Nevertheless, for large field problems such as the scenario of the ISO 11451-2 where an antenna radiates a vehicle in an anechoic chamber, FEM solvers requires an interface between an infinite domain to a finite domain through the use of radiating boundary conditions on artificial truncation surfaces. This causes the solver to model a great quantity of air regio.