INVESTIGADORES
OLLER Sergio Horacio Cristobal
artículos
Título:
A hierarchical finite element for composite laminated beams using a refined zigzag theory
Autor/es:
L. NALLIM; S. OLLER; E. OÑATE; F. FLORES
Revista:
COMPOSITE STRUCTURES
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 2017 vol. 163 p. 168 - 184
ISSN:
0263-8223
Resumen:
In this work a kinematics for laminated beams enriched with a refined formulation ZigZag (RZT), originally presented by Tessler et al. in 2007, introduced in a hierarchical one dimensional type ??p? finite element is presented. The finite element employs Lagrange polynomials for the approximation of the degrees of freedom of the ends (nodes) and orthogonal Gram-Schmidt polynomials to the internal degrees of freedoms. This finite element allows a very low discretization, is free of shear locking and behaves very well when the analysis of laminated composites with accurate determination of local stressesand strains at laminar level is necessary.This element has been validated in the analysis of laminated beams with various sequences of symmetric and asymmetric stacking, studying in each case its accuracy and stability.
