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- W77937578 abstract "In this paper, a method for obtaining nonlinear stiffness coefficients in modal coordinates for geometrically nonlinear finite-element models is developed. The method requires application of a finite-element program with a geometrically non- linear static capability. The MSC/NASTRAN code is employed for this purpose. The equations of motion of a MDOF system are formulated in modal coordinates. A set of linear eigenvectors is used to approximate the solution of the nonlinear problem. The random vibration problem of the MDOF nonlinear system is then considered. The solutions obtained by application of two different versions of a stochastic linearization technique are compared with linear and exact (analytical) solutions in terms of root-mean-square (RMS) displacements and strains for a beam structure." @default.
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- W77937578 date "1999-01-01" @default.
- W77937578 modified "2023-09-26" @default.
- W77937578 title "Determination of Nonlinear Stiffness Coefficients for Finite Element Models with Application to the Random Vibration Problem" @default.
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