Experimental Identification Technique for Boundary Conditions of a Beam. When Boundary Conditions are Nonlinear.

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In a previous paper, the first two authors proposed an experimental identification technique for boundary conditions of a beam. In that paper, however, the boundary conditions were assumed to be linear. In this paper the technique is generalized so that it can be used when the boundary conditions are nonlinear. The proposed technique is based on the principle of harmonic balance, and enables one to determine the boundary conditions in terms of spring and damping properties and equivalent masses and moments of inertia. Numerical simulation is conducted, and the applicability of the proposed technique is confirmed.