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- W2044643256 abstract "A nonlinear, large deflection, elasto-plastic finite element code (EPSA) has been developed for the analysis of shells in an acoustic medium subjected to dynamic loadings. The nonlinear equations of shells are discretized with the aid of a finite difference/finite element method based upon the principle of virtual work. The resulting system of equations contains the nodal displacements as the generalized co-ordinates of the problem. The integration in time of the equations of motion is done explicitly via a central difference scheme. Shell strain-displacement relations are established by a two-dimensional finite difference scheme. The shell constitutive equations are formulated in terms of the shell stress resultants and the shell strains and curvatures. The fluid-structure interaction is accounted for by means of the doubly asymptotic approximation (DAA) expressed in terms of orthogonal fluid expansion functions. The analytically produced results satisfactorily reproduce available experimental data for dynamically loaded shells." @default.
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- W2044643256 date "1983-06-01" @default.
- W2044643256 modified "2023-09-26" @default.
- W2044643256 title "Dynamic elasto-plastic response of shells in an acoustic medium—EPSA code" @default.
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- W2044643256 doi "https://doi.org/10.1002/nme.1620190604" @default.
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