Computing of coupling loss factors using fem, probabilistic approach

Technique for coupling loss factors (CLF) determination with taking into account uncertainty of subsystems is presented. Two beams in junction are considered by an example. Random variables are beams length, which obey the normal distribution law. Finite Element Method (FEM) is used for CLF computing. To verify the technique validity computation example is presented for structure that consists of four sequentially joined beams with uncertain length. Calculations are carried out using two techniques: FEM and Energy Method (EM). It is shown that computing results by two techniques agree well both for mean values and for dispersion.