Work

Numerical analysis of a phase field model for ductile fracture phenomena

Year: 2025

Type: article

Abstract: In fracture mechanics, phase field theories have been introduced for the first time for brittle materials, in order to regularise the sharp crack topology. Especially, the crack surface part of the total energy functional is regularised by using a phase field variable. In the present work, a phase field model for ductile fracture in the framework of non-conventional thermodynamics is studied. In contrast to brittle fracture, the physical mechanisms for fracture are supposed to be driven by plastic deformation.The aim of the paper is to highlight, by analysing numerical examples, important features of the model that affect the predicted material responses. The analysis refers to assumptions commonly adopted in phase field theories and continuum damage mechanics and comprises the numerical robustness of the related finite element integrations.

Source: Engineering Fracture Mechanics

DOI: 10.1016/j.engfracmech.2025.110859

Authors: Aris Tsakmakis, Michael Vormwald

Institution: Technische Universität Darmstadt

Language: English

Topic: Numerical methods in engineering

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,120

Funder: Deutsche Forschungsgemeinschaft