RT Journal Article
T1 Three-dimensional numerical study of thickness effect on plastic CTOD and monotonic plastic zone in an aluminium CT specimen
A1 Camas-Peña, Daniel
A1 Branco, Ricardo
A1 Antunes, Fernando Ventura
A1 Neto, Diogo Mariano
K1 Ciencia de los materiales
AB This work is a numerical study of CT specimens with straight cracks and different thickness values submitted to different load levels, which aims to analyse the shape and dimension variations of the monotonic yielded area near the crack tip, examining the impact of variables such as load magnitude, thickness of the specimen and position along the crack front. Additionally, it intends to explore the correlation between the size of the monotonic plastic zone and the plastic CTOD (Crack Tip Opening Displacement) to determine if a well-defined relationship exists. Furthermore, the impact of specimen thickness and load level on plastic CTOD will be explored. A complex plastic zone was found along the crack front, with the maximum area positioned at some distance from the crack front. A plane stress scale was determined considering the size of the equivalent bi-dimensional yielded area. When examining the behaviour across the thickness, no conclusive correlation was identified between the plastic CTOD and the monotonic yielded area. This suggests that utilising this parameter may not be appropriate for studies related to fatigue crack growth. However, when considering average values, a good correlation was found. The increase in thickness decreased the plastic CTOD values at the surface, while the interior values were unaffected.
PB Elsevier
YR 2023
FD 2023-10-10
LK https://hdl.handle.net/10630/29357
UL https://hdl.handle.net/10630/29357
LA eng
NO D. Camas, R. Branco, F.V. Antunes, D.M. Neto, Three-dimensional numerical study of thickness effect on plastic CTOD and monotonic plastic zone in an aluminium CT specimen, Theoretical and Applied Fracture Mechanics, Volume 128, 2023, 104132, ISSN 0167-8442, https://doi.org/10.1016/j.tafmec.2023.104132
NO Funding for open Access charge: Universidad de Málaga / CBUA.The authors gratefully acknowledge the financial assistance provided by Programa Operativo FEDER – Junta de Andalucía, Spain, under grant reference UMA18-FEDERJA-250; from Ministerio de Educación,Cultura y Deporte in the framework of the Programa Estatal de Promoción del Talento y su empleabilidad en I+D+i, Subprograma Estatal de Movilidad, del Plan Estatal de I+D+i through grant reference CAS18/00251; and FEDER funds through the program COMPETE – Programa Operacional Factores de Competitividade – and by national funds through FCT – Fundaç˜ao para a Ciˆencia e a Tecnologia –, under the project UIDB/00285/2020.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 12 abr 2026