Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Pedro M. A. Areias"'
Publikováno v:
Engineering Analysis with Boundary Elements. 133:120-137
In this paper, a phase field model is developed and applied to the simulation of quasi-static and dynamic fracture using the nonlocal operator method (NOM). The phase field’s nonlocal weak and associated strong forms are derived by a variational pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e6ef15a74fe2119c8eefa48a998d6e8
https://doi.org/10.1016/j.enganabound.2021.08.020
https://doi.org/10.1016/j.enganabound.2021.08.020
Publikováno v:
Computational Mechanics. 68:391-404
For finite-strain plasticity with anisotropic yield functions and anisotropic hyperelasticity, we use the Kroner-Lee decomposition of the deformation gradient combined with a yield function written in terms of the Mandel stress. The source is here th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2746ee9637db14c5fcb1b147cd4cb019
https://doi.org/10.1007/s00466-021-02038-w
https://doi.org/10.1007/s00466-021-02038-w
Autor:
Pedro M. A. Areias, Timon Rabczuk
Publikováno v:
Computational Mechanics. 68:211-227
Nesterov’s 1983 first-order minimization algorithm is equivalent to the numerical solution of a second-order ODE with non-constant damping. It is known that the algorithm can be obtained by time discretization with asynchronous damping, a long-stan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c230b56f55bdedf68fdcd4dce4befe8e
https://doi.org/10.1007/s00466-021-02027-z
https://doi.org/10.1007/s00466-021-02027-z
Publikováno v:
International Journal for Numerical Methods in Engineering. 122:3218-3240
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbb9c42bb85002085b8b703921e48d88
https://doi.org/10.1002/nme.6661
https://doi.org/10.1002/nme.6661
Autor:
Pedro M. A. Areias
Publikováno v:
International Journal of Mechanics and Materials in Design. 17:73-87
Using the Kroner–Lee elastic and plastic decomposition of the deformation gradient, a differential-algebraic system is obtained (in the so-called semi-explicit form). The system is composed by a smooth nonlinear differential equation and a non-smoo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b31c88fdb8a7d881004668c994fb46e
https://doi.org/10.1007/s10999-020-09510-0
https://doi.org/10.1007/s10999-020-09510-0
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação
instacron:RCAAP
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação
instacron:RCAAP
A finite-strain tetrahedron with continuous stresses is proposed and analyzed. The complete stress tensor is now a nodal tensor degree-of-freedom, in addition to displacement. Specifically, stress conjugate to the relative Green-Lagrange strain is us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca1f56f936a30db4bd7476ce58c51a1a
https://doi.org/10.1016/j.finel.2019.07.003
https://doi.org/10.1016/j.finel.2019.07.003
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação
instacron:RCAAP
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação
instacron:RCAAP
Engineering-level accuracy of discretization methods for frictional contact originates from precise representation of discontinuous frictional and normal interaction laws and precise discrete contact techniques. In terms of discontinuous behavior in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::597aa11edf0f28f72948458114336132
https://doi.org/10.1007/s10999-019-09480-y
https://doi.org/10.1007/s10999-019-09480-y
Autor:
Thang X. Duong, Harold S. Park, Roger A. Sauer, N. Vu-Bac, Pedro M. A. Areias, Tom Lahmer, Timon Rabczuk
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 350:480-510
Soft, active materials have been widely studied due to their ability to undergo large, complex shape changes in response to both mechanical and non-mechanical external stimuli. However, the vast majority of such studies has focused on investigating t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47c5e9eff9fa80960e890ef3c87dfae4
https://doi.org/10.1016/j.cma.2019.03.011
https://doi.org/10.1016/j.cma.2019.03.011
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação
instacron:RCAAP
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação
instacron:RCAAP
Specific algorithms for non-Newtonian fluids flow depend on the governing constitutive equation. In this work, we present a constitutive equation for a third-grade fluid in which a specific normal stress coefficient depends on the shear rate. This ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8364cb278b57fe906fbec937050e1d9
Publikováno v:
Thin-Walled Structures. 170:108512
Thin-walled structures impose zero-stress constraints at free faces. These are in general nonlinear functions of strain and, in the elasto-plastic case, non-smooth. Under these circumstances, the conjugate strain components become constitutive unknow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f18edbdd109a323d1f584326450bffa0
https://doi.org/10.1016/j.tws.2021.108512
https://doi.org/10.1016/j.tws.2021.108512