Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10316/4318
Título: | Numerical simulation of tensile tests of prestrained sheets | Autor: | Menezes, L. F. Fernandes, J. V. Rodrigues, D. M. |
Palavras-chave: | Mechanical modelling; Numerical simulation; Plasticity | Data: | 1999 | Citação: | Materials Science and Engineering A. 264:1-2 (1999) 130-138 | Resumo: | The effect of cross section variation on formability of prestrained samples has been investigated using finite element simulations of a standard sheet tensile test. The mechanical model takes into account large elastoplastic strains and rotations that occur during deformation. Hill's orthotropic yield criterion with isotropic hardening describes the anisotropic plastic properties of the sheet. The isotropic hardening is modelled by a modified Swift law that describes the response of prestrained materials in reloading. Two different situations were simulated: reloading in tension of samples with constant cross sectional area and reloading in tension of samples with two zones of slightly different cross sectional areas. The results show that the strain distribution along the tensile axis of a prestrained sample depends on the level of the prestrain and also on the presence and size of geometrical fluctuations in the cross section, which always occur in experimental samples. This dependence is higher for materials with lower work-hardening rates. | URI: | https://hdl.handle.net/10316/4318 | DOI: | 10.1016/s0921-5093(98)01104-6 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Eng.Mecânica - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
file015bedcbff8346b6b3759b35760cc2ff.pdf | 282.19 kB | Adobe PDF | Ver/Abrir |
Citações SCOPUSTM
16
Visto em 2/set/2024
Citações WEB OF SCIENCETM
17
Visto em 2/set/2024
Visualizações de página 50
453
Visto em 10/set/2024
Downloads
434
Visto em 10/set/2024
Google ScholarTM
Verificar
Altmetric
Altmetric
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.