Ductile failure modeling: Stress dependence, non-locality and damage to fracture transition

• Type: Chapter or Part of a Book
• Date: 2015

Authors

José César de Sá (Author) FEUP; F.M. Andrade Pires (Author) FEUP; Seabra, MRR (Author) Other; Andrade, FXC (Author) Other; Malcher, L (Author) Other

Book

Title: Handbook of damage mechanics.Nano to macro scale for materials and structures

Pages: 877-937

ISBN: 978-1-4614-5588-2

Indexing

Scopus - 2 Citations

Other information

Authenticus ID: P-00G-TTW

DOI: 10.1007/978-1-4614-5589-9

Abstract (EN): In this chapter, some recent developments and proposals for improvement of material models at the constitutive level to deal with ductile damage at large plastic strains are addressed. Numerical tests are carried out to test their performance on shear-dominated stress states where their main differences lie. Subsequently, aspects of the use of nonlocal models for the regularization of the numerical values associated with damage models, namely, discretization dependency, are reviewed. Different approaches on the choice of the regulation variable or variables are tested at different stress states characterized by different values of triaxiality and third invariant of the deviatoric stress tensor. Finally, a simple strategy on how to handle the transition from damage to fracture by means of the extended finite element method is described. © Springer Science+Business Media New York 2015.

Language: English

Type (Professor's evaluation): Scientific