Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Ulloa, Jacinto"'
We present an exploratory study of the possibilities of the Deep Ritz Method (DRM) for the modeling of strain localization in solids as a sharp discontinuity in the displacement field. For this, we use a regularized strong discontinuity kinematics wi
Externí odkaz:
http://arxiv.org/abs/2409.13241
Publikováno v:
Computer Methods in Applied Mechanics and Engineering, 429, 117180 (2024)
This paper explores the role of generalized continuum mechanics, and the feasibility of model-free data-driven computing approaches thereof, in solids undergoing failure by strain localization. Specifically, we set forth a methodology for capturing m
Externí odkaz:
http://arxiv.org/abs/2402.15966
This paper presents a multi-temporal formulation for simulating elastoplastic solids under cyclic loading. We leverage the proper generalized decomposition (PGD) to decompose the displacements into multiple time scales, separating the spatial and int
Externí odkaz:
http://arxiv.org/abs/2308.11821
Publikováno v:
In Results in Engineering September 2024 23
Autor:
Ulloa, Jacinto, Wambacq, Jef, Alessi, Roberto, Samaniego, Esteban, Degrande, Geert, François, Stijn
This paper presents a framework for modeling failure in quasi-brittle geomaterials under different loading conditions. A micromechanics-based model is proposed in which the field variables are linked to physical mechanisms at the microcrack level: da
Externí odkaz:
http://arxiv.org/abs/2107.10702
Autor:
Noii, Nima, Khodadadian, Amirreza, Ulloa, Jacinto, Aldakheel, Fadi, Wick, Thomas, Francois, Stijn, Wriggers, Peter
The prediction of crack initiation and propagation in ductile failure processes are challenging tasks for the design and fabrication of metallic materials and structures on a large scale. Numerical aspects of ductile failure dictate a sub-optimal cal
Externí odkaz:
http://arxiv.org/abs/2104.11114
Publikováno v:
In Computer Methods in Applied Mechanics and Engineering 1 February 2024 419
Publikováno v:
Comput. Methods Appl. Mech. Engrg., Vol. 375, (2021), pp. 113612
The governing equations of the variational approach to brittle and ductile fracture emerge from the minimization of a non-convex energy functional subject to irreversibility constraints. This results in a multifield problem governed by a mechanical b
Externí odkaz:
http://arxiv.org/abs/2011.10125
Publikováno v:
In Engineering Fracture Mechanics 27 September 2023 290
Autor:
Ulloa, Jacinto, Gorgogianni, Anna, Karapiperis, Konstantinos, Ortiz, Michael, Andrade, José E.
Publikováno v:
In Journal of the Mechanics and Physics of Solids September 2023 178