Encontrados 5 documentos, a visualizar página 1 de 1
Numerical study on the influence of initial anisotropy on optimal blank shape
Padmanabhan, R.; Oliveira, M. C.; Baptista, A. J.; Alves, J. L.; Menezes, L. F.http://www.sciencedirect.com/science/article/B6V36-4TG8K7H-1/2/f5bb6c39fe2ad213cc96ece4a2f3a08e
Sensitivity study on some parameters in blank design
Oliveira, M. C.; Padmanabhan, R.; Baptista, A. J.; Alves, J. L.; Menezes, L. F.Sensitivity study on various numerical parameters is necessary for modeling a process. It is important to determine the influence of such parameters in order to achieve robust design. Initial blank shape is a process parameter that controls the quality of a formed part. This paper describes a blank shape optimization procedure that uses three numerical tools to determine an optimal blank shape for a formed part...
Blank design for deep drawn parts using parametric NURBS surfaces
Padmanabhan, R.; Oliveira, M. C.; Baptista, A. J.; Alves, J. L.; Menezes, L. F.Deep drawing is a forming process controlled by a number of parameters. The initial blank shape is one of the most important process parameter that has a direct impact on the quality of the finished part. This paper describes a new method to determine the optimal blank shape for a formed part using the deformation behaviour predicted by finite element simulations and salient features of NURBS surfaces. The prop...
Effect of anisotropy on the deep-drawing of mild steel and dual-phase steel tai...
Padmanabhan, R.; Baptista, A. J.; Oliveira, M. C.; Menezes, L. F.Tailor-welded blanks made of dissimilar, uniform or non-uniform thickness materials have potential applications in automobile industries. Compared to the base metal, the formability of tailor-welded blank is less due to the presence of weld area and strength mismatch between component blanks. Most sheet metals used to produce tailor-welded blanks have anisotropy induced during pre-processing stage due to large ...
Trimming of 3D solid finite element meshes using parametric surfaces: Applicati...
Baptista, A. J.; Alves, J. L.; Rodrigues, D. M.; Menezes, L. F.In this paper we present a methodology for trimming 3D solid finite element meshes using a non-uniform rational B-spline (NURBS) surfaces representation. The algorithms applied in the identification of the spatial position of the finite element (FE) nodes and elements relative to the trimming surface are described, as well as, the explanation of the correction methods adopted to geometrically rearrange the trim...
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