Ductile damage at large plastic strains: models, numerical issues and transition to fracture.

• Type: Article in International Conference Proceedings Book
• Date: 2013

Authors

José César de Sá (Author) FEUP

Conference proceedings International

Title: NUMISHEET 2014: THE 9TH INTERNATIONAL CONFERENCE AND WORKSHOP ON NUMERICAL SIMULATION OF 3D SHEET METAL FORMING PROCESSES: PART A BENCHMARK PROBLEMS AND RESULTS AND PART B GENERAL PAPERS

Pages: 344-349

9th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes (NUMISHEET)

Melbourne, AUSTRALIA, JAN 06-10, 2014

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ISI Web of Knowledge - 0 Citations

Other information

Authenticus ID: P-00N-9WK

DOI: 10.1063/1.4849987

Abstract (EN): The introduction of new effects, both in the plastic flow rule of the material and in the evolution laws for internal variables like damage, namely the importance of taking into account triaxiality and the influence of the third invariant of the deviatoric stress tensor in the modeling of mechanical behavior of metallic materials is here assessed. To solve mesh dependency associated with numerical implementation of strain softening laws a non-local approach of integral-type is used. A comprehensive assessment of several non-local models is carried out for different values of stress triaxiality and third invariant of the deviatoric stress tensor. A continuous-discontinuos model, based on the XFEM, in order to handle simultaneously large strains, damage localisation and crack propagation is discussed.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6