Reduced order modeling of nonlinear structures with frictional interfaces

Over the past decade, a number of phenomenologically different approaches to modeling and simulating the dynamics of a jointed structure have been proposed. This chapter presents and assesses multiple modeling techniques to predict the nonlinear dynamic behavior of a bolted lab joint, including frequency based sub-structuring methods, harmonic balance methods, and nonlinearly coupled reduced order model transient simulations. The regimes in which each method is best suited are identified, and recommendations are made for how to select a modeling method and for advancing numerical modeling of discrete nonlinearities.