Abstract

The lifetime of most engineering structures and components is known to depend on the presence of defects, such as holes, cracks, or voids usually introduced during a manufacturing process. In many cases, the crack growth, extension and propagation within a body, still remains a challenging problem in fracture mechanics. The present paper proposes the application of the level set method combined with the numerical extended finite element method (XFEM) to predict the fracture direction of propagation within a specimen, and to compute the stress intensity factor for cracked plates under different loading conditions. This technique avoids the difficulty of remeshing when tracking the moving interface positions during the cracking process. The combined XFEM formulation is first reviewed and then applied to different examples. The numerical results provided by the XFEM are straightforwardly compared with the theoretical predictions from the handbooks and the numerical solutions found with a strong formulation finite element method (SFEM) based on the generalized differential quadrature (GDQ) approach. The good agreement between the theoretical and numerical results confirms the accuracy of the proposed formulation to treat fracture mechanics.

Autore Pugliese

• Dimitri Rossana

Tutti gli autori

• Dimitri R. , Fantuzzi N. , Li Y. , Tornabene F.

Titolo volume/Rivista

COMPOSITE STRUCTURES

Anno di pubblicazione

2017

ISSN

0263-8223

ISBN

Non Disponibile

Numero di citazioni Wos

9

Ultimo Aggiornamento Citazioni

25/04/2018

Numero di citazioni Scopus

10

Ultimo Aggiornamento Citazioni

26/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile