Abstract
Recent successes with investigations of nonlinear viscoelastic material behavior have led to an approach which is appropriate for more general time-dependent systems. Herein, the author describes a strategy to characterize nonlinear time-dependent response of mechanical systems such as elastomeric dampers using dynamic mechanical test and analysis methodologies. Although these classical methods are limited to linear response, the author presents a theory for nonlinear characterization and describes the test protocol required to adequately measure parameters necessary to characterize nonlinear response. Several test cases are presented, and these results show excellent agreement between predictions of nonlinear response and measurements from experiments.
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