Random response of nonlinear continuous systemsWhirley, Robert Gary (1987) Random response of nonlinear continuous systems. Technical Report: CaltechEERL:1987.EERL-87-04. California Institute of Technology. Full text available as:
AbstractThis thesis presents a technique for obtaining the stochastic response of a nonlinear continuous system. First, the general method of nonstationary continuous equivalent linearization is developed. This technique allows replacement of the original nonlinear system with a time-varying linear continuous system. Next, a numerical implementation is described which allows solution of complex problem on a digital computer. In this procedure, the linear replacement system is discretized by the finite element method. Application of this method to systems satisfying the one-dimensional wave equation with two different types of constitutive nonlinearities is described. Results are discussed for nonlinear stress-strain laws of both hardening and softening types
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