The Energy Finite Element Method (EFEM) is based upon an approximation of the partial differential equations that result from the energy balance and energy coupling relations for different structural configurations and wave types. The coupling relations are used to describe the energy exchange among various subsystems. The EFEM can be expressed in a standard finite element (FE) approach, which is similar to a heat conduction problem. The Spectral Element Method (SEM) is based upon the exact solution of the partial differential equations in the frequency domain. Elements are assembled using the direct stiffness method. Therefore, a spectral element is equivalent to an infinite number of finite elements for a homogeneous medium. For this reason, the SEM, when it can be used, is more adequate to predict the dynamic response at higher frequencies than the FE method. In this paper, these two methods are used to predict the dynamic response of frame-type structures at high frequencies. Responses simulated with EFEM involving longitudinal and transversal waves in coupled beams are analyzed and compared with the solutions obtained by SEM. Experimental results from the INCE T-shaped beam are presented and compared with the simulated results.4 27712779Moens, I., (2001) On the Use and Validity of the Energy Finite Element Method for High Frequency Vibrations, , PhD thesis, Leuven Catholic University, BelgiumWohlever, J.C., (1988) Vibration Power Flow Analysis of Rods and Beams, , PhD thesis, Purdue University, Lafayette, USADoyle, J.F., (1989) Wave Propagation in Structures, , Prentice-Hall, New York, USACho, P.E., (1993) Energy Flow Analysis of Coupled Structures, , PhD thesis, Purdue University, Lafayette, USAPlunt, J., Fredo, C., Sanderson, M., On the Use and Misuse of Statistical Energy Analysis for Vehicle Noise Control (1993) Proceedings of the SAE Noise and Vibration Conference, pp. 319-328Lyon, R.H., (1995) Theory and Application of Statistical Energy Analysis, , M.I.T. Press, Second EditionCimerman, B., Bharj, T., Borello, G., Overview of the Experimental Approach to Statistical Energy Analysis (1997) SAE Noise and Vibration Conference, 169, pp. 1-6Pavic, G., Vibration Damping, Energy and Power Flow (2001) Proceedings of the 17th International Congress on Acoustics, Vibrations and Structural Acoustics, 1, p. 2. , Rome, ItalyHambric, S.A., Comparison of Finite Element Predictions and Experimental Measurements of Structure- Borne Powers in a T-Shaped Beam Proceedings of Inter-noise 95, Newport-Beach, CA, USA, July,10- 12, (1995)Santos, E.O., Donadon, L.V., Arruda, J.R.F., Santos, D., Analysis of Coupled Structural Systems using Energy Finite Elements and Spectral Elements, 12th International Congress on Sound and Vibration, Lisbon (2005) J. M. C., pp. 11-14July