Steady state harmonic response of nonlinear soil-structure interaction problems through the Preisach formalism

Steady state harmonic response of nonlinear soil-structure interaction problems is addressed in this paper. Due to well-known stiffness degradation phenomenon, the steady-state study referred small-medium strain condition whereas no significant pore water pressure change observed (e.g. clayey soils and sands drained conditions). A novel cyclic hysteretic model based on Preisach formalism proposed describe behavior soil-foundation interaction. Through a balance procedure, furthermore, steady determined. Equivalent amplitude-dependent damping have been derived closed form reliably phenomenon. Those expressions are function elastic foundation soil stiffness, maximum attainable horizontal force moment capacity foundation. Furthermore, handy equivalent fundamental period damping, also dependent from level excitation, derived. The model, moreover, has advantage be easily calibrated match modulus reduction curves determined either numerical or experimental tests. Numerical applications comparisons with more advanced models data available literature presented.