Search Results - "Barata da Rocha, A."

Analysis of plastic flow localization under strain paths changes and its coupling with finite element simulation in sheet metal forming by Barata da Rocha, A., Santos, Abel D., Teixeira, Pedro, Butuc, M.C.

“…Formability of sheet metal is usually assessed by the useful concept of forming limit diagrams (FLD) and forming limit curves (FLC) represent a first safety…”
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A theoretical study on forming limit diagrams prediction by Butuc, M.C., Gracio, J.J., Barata da Rocha, A.

“…The paper develops a theoretical study on forming limit diagrams using a new general code for forming limit strains prediction. Treating the Marciniak and…”
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An experimental and theoretical analysis on the application of stress-based forming limit criterion by Butuc, M.C., Gracio, J.J., Barata da Rocha, A.

“…In this paper, a detailed study on the stress-based forming limit criterion (FLSD) during linear and complex strain paths is developed. The calculation of…”
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Tailored welded blanks––an experimental and numerical study in sheet metal forming on the effect of welding by Reis, Ana, Teixeira, Pedro, Ferreira Duarte, J., Santos, Abel, Barata da Rocha, A., Fernandes, A.A.

“…Tailored welded blanks allow the combination of different materials and different sheet thicknesses in a single blank, thus letting designers and engineers to…”
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The performance of Yld96 and BBC2000 yield functions in forming limit prediction by Butuc, M.C., Banabic, D., Barata da Rocha, A., Gracio, J.J., Ferreira Duarte, J., Jurco, P., Comsa, D.S.

“…The objective of the work presented here is to assess the performance of two non-quadratic yield functions for orthotropic sheet metals under plane stress…”
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Sheet metal formability evaluation using continuous damage mechanics by Teixeira, P., Santos, A. D., de Sá, J. M. A. César, Andrade Pires, F. M., da Rocha, A. Barata

“…This paper presents a numerical approach for failure prediction in sheet metal forming operations. The approach is based on the coupling of anisotropic…”
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Towards standard benchmarks and reference data for validation and improvement of numerical simulation in sheet metal forming by Santos, Abel D, Ferreira Duarte, J, Reis, Ana, Barata da Rocha, A, Menezes, Luis, Oliveira, Marta, Col, Alain, Ono, T

“…The last decade has witnessed many advances and a lot of improvement in FE codes for simulation of sheet metal forming processes. Such advances could be…”
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The respective influences of grain size and texture on the formability of a 1050 aluminium alloy by Bacroix, B., Chauveau, Th, Ferreira Duarte, J., Barata da Rocha, A., Gracio, J.

“…In order to clarify the relative influences of texture and grain size on the plastic response of a 1050 Al alloy, some tensile tests have been performed after…”
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A more general model for forming limit diagrams prediction by Butuc, M.C., Barata da Rocha, A., Gracio, J.J., Ferreira Duarte, J.

“…The present paper is devoted to the development of a more general code for the prediction of forming limit diagrams (FLDs). For this purpose, the…”
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Influence of damage on the plastic instability of sheet metals under complex strains paths by Barlat, F, Rocha, A. Barata da, Jalinier, J M

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Influence of damage on the plastic instability of sheet metals under complex strain paths by Barlat, F., Barata Da Rocha, A., Jalinier, J. M.

“…During the sheet metal (dual-phase steel) forming operation, internal damage occurs as a result of nucleation growth and coalescence of cavities around…”
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