VIBRATION ANALYSIS OF LAMINATED BEAMS USING AN ITERATIVE SMEARED LAMINATE MODEL

A smeared laminate model is presented for the dynamic analysis of lami nated beams. An iterative process is used to refine successively the s hape of the assumed displacement field in the beam, resulting in a sel f-consistent stress/strain distribution. The model includes the effect s of transverse shear and rotatory inertia. The iterative model is use d to predict the modal frequencies and damping of simply supported bea ms with integral viscoelastic layers. The solutions for a three layer beam are compared to a three layer approximate model. A nine layer sol ution is also presented, illustrating the applicability of the model t o multi-layer configurations, situations that would normally require a more complex, discrete layer analysis. (C) 1997 Academic Press Limite d.