Towards Energetic Consistent Transition from Damage to Fracture

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

Authors

seabra, mrr (Author) FEUP; de sa, jmac (Author) FEUP

Conference proceedings International

Title: 11TH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN INDUSTRIAL FORMING PROCESSES (NUMIFORM 2013)

Pages: 671-676

11th International Conference on Numerical Methods in Industrial Forming Processes (NUMIFORM)

Shenyang, PEOPLES R CHINA, JUL 06-10, 2013

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Other information

Authenticus ID: P-005-37P

DOI: 10.1063/1.4806893

Abstract (EN): From the theoretical point of view, an energetically transition from damage to fracture should occur for totally damaged material. Nevertheless, in terms of numerical simulation, this condition leads to a singularity in the constitutive equations, when the Lemaitre model for ductile damage is used to describe material behavior. In this work, a cohesive law is inserted in a previous developed model for the transition of damage to fracture using XFEM in order to overcome this limitation. An exponential type of cohesive law is assumed, but its defining parameters are not considered to be a characteristic of the material but are rather fitted to fulfill energetic requirements. The efficiency of the proposed approach is tested in various numerical examples.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6