Work

Interface and phase-field dynamic quasi-brittle fracture of solids under tension or compression

Year: 2025

Type: article

Abstract: A computational dynamic fracture model for multimaterials is described to provide crack-mode dependence including particular treatment when the load causes compression. The model also distinguishes between fracture in material and along interfaces. The former is simulated by the theory of phase-field fracture which causes material damage to occur in a thin material band introducing regularised cracks. The latter considers the interface to be a thin damageable adhesive layer with its own rule of degradation. In both cases internal variables are introduced for modelling. The computational approach is rendered from dynamic evolution equations based on the Hamilton principle adapted for dissipative systems. The calculations use a staggered time-stepping procedure and sequential quadratic programming algorithms together with a MATLAB finite element in-house code.

Source: Procedia Structural Integrity

DOI: 10.1016/j.prostr.2025.06.044

Author: Roman Vodička

Institution: Technical University of Košice

Language: English

Topic: Numerical methods in engineering

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: Ministerstvo školstva, vedy, výskumu a športu Slovenskej republiky, Vedecká Grantová Agentúra MŠVVaŠ SR a SAV

Awards: Mikro-makro modelovanie multi-fyzikálnych polí v kompozitných konštrukciách a ich častiach, Trhliny v kompozitných konštrukčných prvkoch a ich interakcie pri mechanickom namáhaní