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Experimental Characterization of a New Benchmark Structure for Prediction of Damping Nonlinearity
Experimental characterization of a new benchmark structure designed so as to be predictable with current simulation tools using the Hilbert transform method applied to modally filtered time data presents a set of well characterized tests that can be used to validate numerical methods that seek to predict the nonlinear behavior of bolted interfaces.
A Comparison of Reduced Order Modeling Techniques Used in Dynamic Substructuring
This chapter compares the advantages and disadvantages of multiple reduced order modeling strategies for two dynamic substructuring problems.
A Numerical Continuation Method to Compute Nonlinear Normal Modes Using Modal Reduction
Nonlinearities in structural dynamic systems introduce behavior that cannot be described with linear vibration theory, such as frequency-energy dependence and internal resonances. The concept of
Substructuring of Viscoelastic Subcomponents with Interface Reduction
The Craig-Bampton approach with interface reduction is extended to include subcomponents with linear viscoelastic materials modeled using a Prony series for substructures containing materials such as foams or polymers, which more accurately represents the material energy dissipation compared to traditional viscous or modal damping.
Computing Nonlinear Normal Modes Using Numerical Continuation and Force Appropriation
Many structures can behave nonlinearly, exhibiting behavior that is not captured by linear vibration theory such as localization and frequency-energy dependence. The nonlinear normal mode (NNM)
Evaluation of Geometrically Nonlinear Reduced-Order Models with Nonlinear Normal Modes
Several reduced-order modeling strategies have been developed to create low-order models of geometrically nonlinear structures from detailed finite element models, allowing one to compute the dynamic
Modal Substructuring of Geometrically Nonlinear Finite Element Models with Interface Reduction
Substructuring methods have been widely used in structural dynamics to divide large, complicated finite element models into smaller substructures. For linear systems, many methods have been develop...