Eventos Anais de eventos
MECSOL 2022
8th International Symposium on Solid Mechanics
Application of a fatigue Phase-Field framework to recover the fracture toughness of a WE43C-T5 Magnesium Alloy
Submission Author:
Matheus Garcia do Vale , SP
Co-Authors:
Matheus Garcia do Vale, Julian Arnaldo Avila Diaz, Gualter Pereira, Waldek Wladimir Bose Filho, José Luiz Boldrini, Marco Bittencourt
Presenter: Matheus Garcia do Vale
doi://10.26678/ABCM.MECSOL2022.MSL22-0109
Abstract
The material failure due to mechanical fatigue is of great concern in industry and motivation for research. Understanding crack resistance in cyclic and static load regimes is essential when we focus on solving more complex problems such as fatigue failure. Phase-field is one of the methodologies employed recently to understand better phenomena, including damage, fracture, and fatigue. This study applies a thermodynamically consistent, isothermal phase-field model. It also includes damage and fatigue in a small strain regime. Instead of treating fatigue phenomena as a fracture toughness degradation of the conventional literature, this methodology models fatigue as another phase-field variable coupled with damage. The methodology has proven effective for one-dimensional cyclic loading cases and isotropic elastoplastic materials. Following the ASTM E399 standard, it is possible to validate the numerical results for a WE43C-T5 magnesium alloy using the plane-strain fracture toughness test.
Keywords
Phase-Field Model, fracture, fatigue
