RT Journal Article
T1 Discontinuous quarter-point boundary elements revisited: Computation of T-stress in two-dimensional cracked components
A1 Baena Oliva, María Del Carmen
A1 García-Sánchez, Felipe
A1 Sáez, Andrés
K1 Deformaciones y tensiones
AB This paper analyzes the use of discontinuous quarter-point quadratic elements in a dual or hypersingular boundary element context to compute the T-stress for cracked 2-D isotropic components. The performance of this approach has been demonstrated in the past for stress intensity factors (SIFs) computation and, herein, it is revisited to assess its adequacy for T-stress evaluation. To this end, novel direct extrapolation formulas that determine the T-stress from the computed nodal displacements at the collocation nodes of the discontinuous quarter-point element are proposed, and their accuracy and effectiveness is satisfactorily tested by several numerical examples involving 2-D cracked Carbon NanoTube (CNT) reinforced composites. SIFs extrapolated from the computed nodal crack opening displacements and T-stress evaluated from the computed stresses at internal points (close to the crack-tip) are also presented for completeness. The proposed techniques are a valid and easy-to-implement alternative to the interaction integral approaches when determining SIFs and T-stress.
PB Elsevier Ltd.
YR 2023
FD 2023-09-30
LK https://hdl.handle.net/10630/28686
UL https://hdl.handle.net/10630/28686
LA eng
NO C. Baena, F. García-Sánchez, A. Sáez, Discontinuous quarter-point boundary elements revisited: Computation of T-stress in two-dimensional cracked components, Theoretical and Applied Fracture Mechanics, Volume 128, 2023, 104105, ISSN 0167-8442,
NO Ministerio de Ciencia, Innovación y Universidades de España.The European Regional Development Fund.Consejería de Economía y Conocimiento de Andalucía.Proyectos RTI2018-094945-B-C21 y P18-RT-3128.Financiación parcial de los costes de acceso abierto: Universidad de Málaga / CBUA.
NO Funding for open Access charge: Universidad de Málaga / CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026