| Texto completo | |
| Autor(es): |
Sanei, Manouchehr
[1]
;
Devloo, Philippe R. B.
[2]
;
Forti, Tiago L. D.
[3]
;
Duran, Omar
[4]
;
Santos, Erick S. R.
[5]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Campinas, Petr Engn Div, Mech Engn Dept FEM, Campinas, SP - Brazil
[2] Univ Estadual Campinas, Civil Engn Dept FEC, Campinas, SP - Brazil
[3] Simworx Engn Res & Dev, Campinas, SP - Brazil
[4] Univ Paris Est, Ctr Enseignement & Rech Math & Calcul Sci, CERMICS ENPC, Paris - France
[5] Petrobras SA, Res & Dev Ctr Cenpes, Rio De Janeiro, RJ - Brazil
Número total de Afiliações: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ROCK MECHANICS AND ROCK ENGINEERING; v. 55, n. 1 OCT 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
Optimization can apply in almost every branch of science and technology. In particular, a gradient-based iterative method is a mathematical optimization procedure that can be used to make decisions. The gradient-based optimization method can only find a local minimum of the objective function if the algorithm starts with the appropriate initial data. The ambition of this article is to develop a new scheme to make an initial guess for iterative optimization methods to calibrate accurately the material parameters of strain-hardening elastoplastic constitutive models based on the test data. The elastoplastic models are Drucker-Prager and modified Cam-Clay, and the data obtained from triaxial, oedometric, and hydrostatic tests. The validity of proposed material parameters is evaluated using a home-made finite-element simulator. The results emphasize the ability of the proposed procedure to accurately calibrate material parameters. (AU) | |
| Processo FAPESP: | 17/15736-3 - Centro de Pesquisa em Engenharia em Reservatórios e Gerenciamento de Produção de Petróleo |
| Beneficiário: | Denis José Schiozer |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |