ANALYSIS OF CRACKED PLATES BY A RITZ TYPE APPROACH
Bruno Henrique de Sena e Oliveira1; Eliseu Lucena Neto2; Francisco Alex Correia Monteiro2
1 EMBRAER S.A.; 2 Instituto Tecnológico de Aeronáutica
doi:10.20906/CPS/CILAMCE2017-0606
Resumo
The present paper deals with the analysis of the stress intensity factors of cracked plates using the Ritz method. This analysis is essential for the design of wing and fuselage skins in aerospace engineering. A set of hierarchic polynomials is used to define the displacement functions of the cracked plate. The plate is divided into a number of panels and treated as an assembly of them so that the discontinuity associated with cracks may be taken into account. Examples illustrate the h- and p-type convergence of the proposed scheme, comparing its accuracy and efficiency with those of finite element models in predicting stress intensity factors.
Palavras-chave: Cracked plate; Ritz method; Hierarchic set; Polynomial set; Stress intensity factor