Vibrations are an omnipresent phenomena and generally their presence is sought to be limited since they may cause malfunction, noise, wear, discomfort and destruction. In the last century, methods and technologies regarding to dynamic analysis developed significantly. Modal analysis constitutes an important section of these developments and all the numerous approaches it has can be grouped in two major categories: Experimental Modal Analysis (EMA) and Operational Modal Analysis. Because of the sheer number of modal analysis approaches and them being constantly developed it is hard to come by up-to-date comparisons of different methodologies under different circumstances. In this thesis, modal parameter extraction method Rational Fraction Polynomials method in z-domain (RFP-z) is elaborated and evaluated by creating a numerical model to run digital simulations.