Search results for "Forming"

Process mechanics analysis in single point incremental forming

2004

The request of highly differentiated products and the need of process flexibility have brought the researchers to focus the attention on innovative sheet forming processes. Industrial application of conventional processes is, in fact, economically convenient just for large scale productions; furthermore conventional processes do not allow to fully satisfy the mentioned demand of flexibility. In this contest, single point incremental forming (SPIF) is an innovative and flexible answer to market requests. The process is characterized by a peculiar process mechanics, being the sheet plastically deformed only through a localised stretching mechanism. Some recent experimental studies have shown …

An integrated approach to the design of tube hydroforming processes: artificial intelligence, numerical analysis and experimental investigation

2004

In the last years, the growing role of process flexibility in modern mechanical industries has driven a rising interest in optimisation of process/product design through innovative techniques. Moreover, the development of niche productions, which are characterised by low production volumes and small batches leads to the need of more flexible and rapid forming technologies. In this way, a great research effort is performed towards the study of new stamping processes: among them hydro forming finds a large interest in automotive industry since it allows to significantly reduce tooling costs and also to avoid some secondary operations. Different studies are available in the technical literatur…

Incremental forming of friction stir welded taylored sheets

2006

In the last decade sheet metal forming market has undergone substantial mutations since the development of more efficient strategies in terms of flexibility and cost reduction is strictly due. Such requirements are not consistent with traditional metal stamping processes which are characterized by complex equipment, capital and tooling costs; thus the industrial application of such processes is economically convenient just for large scale productions. For this reason most of the research work developed in the last years has been focused on the development of new sheet forming processes able to achieve the above discussed goals. Contemporary, with particular reference to the automotive indus…

'Fly me to the moon', Pink Floyd et la conquête de l'Amérique

2019

International audience

Asymmetric Single Point Incremental Forming of sheet metal

2005

The use of computers in manufacturing has enabled the development of several new sheet metal forming processes, which are based upon older technologies. This paper describes modifications that have been made to traditional forming methods such as conventional spinning and shear forming, forming processes in which deformation is localized. Recent advances have enabled this localized deformation to be accurately controlled and studied. Current developments have been focused on forming asymmetric parts using CNC technology, without the need for costly dies. Asymmetric Incremental Sheet Forming has the potential to revolutionize sheet metal forming, making it accessible to all levels of manufac…

The circle in the relationship between space and body. Photo-essay based on Isidro Blasco and the BAPNE method

2015

En el presente artículo se muestra un estudio visual sobre el espacio educativo universitario en el que se desarrollan enseñanzas sobre percusión corporal. Como marco metodológico se escoge la Investigación Educativa Basada en las Artes Visuales empleándose la obra de un artista como referente conceptual y metodológico. La investigación queda marcada tanto por la referencia visual a la obra de Isidro Blasco – especialmente con la obra “Shanghai planet 2009”-; como por los paralelismos establecidos entre el objeto de estudio de esta investigación -el análisis espacial- y los focos de interés desvelados por los críticos de arte respecto a la obra de este artista. Mediante un discurso visual f…

A numerical approach for the modelling of forming limits in hot incremental forming of AZ31 magnesium alloy

2021

AbstractMagnesium alloys, because of their good specific material strength, can be considered attractive by different industry fields, as the aerospace and the automotive one. However, their use is limited by the poor formability at room temperature. In this research, a numerical approach is proposed in order to determine an analytical expression of material formability in hot incremental forming processes. The numerical model was developed using the commercial software ABAQUS/Explicit. The Johnson-Cook material model was used, and the model was validated through experimental measurements carried out using the ARAMIS system. Different geometries were considered with temperature varying in a…

Recent advances in sheet metal single point incremental forming and friction stir welding

2011

Graphic proposal for the great hall of the Palace of the Counts of Oliva

2021

[EN] The now-demolished Palace of the Counts of Oliva, in the province of Valencia (Spain), was an outstanding example of late Gothic and early Renaissance architecture and art. Its great hall was particularly impressive, with rich, complex decoration that constituted a cultural milestone linked recently to the ‘Germanías’, or Brotherhoods. Through research conducted in image and document collections, a graphic reproduction of the room has been produced, with special emphasis on its frieze. The procedures and techniques used in this process are examined here, before a final contemplation of the possible uses for these results.

Comparative Study for Springback Prediction on Single Point Incremental Forming Process

2014

The present paper proposes a comparative study in order to determine the springback in single point incremental forming process. Using the Ls-Dyna software the process was simulated for one piece in frustum of pyramid shape. In the end of the explicit dynamic analysis, it was run, using the same software, an implicit analysis to determine the springback. For this comparison study we selected four different shell formulations. The results obtained in this simulation were compared with those obtained experimentally for the same part. The experimental research was conducted on a robot and, on the opposite side of the machined surface, an Aramis measuring optical system was placed to allow the …