INVESTIGADORES
CARDONA alberto
artículos
Título:
A Load-Dependent Basis for Reduced Nonlinear Structural Dynamics
Autor/es:
SERGIO IDELSOHN; ALBERTO CARDONA
Revista:
COMPUTERS & STRUCTURES
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 1985 vol. 20 p. 203 - 210
ISSN:
0045-7949
Resumen:
A computational algorithm for predicting the dynamical response of a nonlinear structure by means of a reduction scheme is described. In it, the nonlinear system of ordinary differential equations obtained from the finite element discretization is reduced, by employing a Rayleigh Ritz technique. A new criterion for the computation of the basis vectors is proposed. It is based on a sequence of basis bectores proposed by Wilson et al. for linear dynamics problems, which was augmented by adding derivatives of these vectores with respect to the generalized displacement amplitudes. The later vectors allow the treatment of nonlinear problems.
