Browsing by Author "Anza, J. J."
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Item Computer aided forging design(1994-09) Anza, J. J.; Barbero, J. I.; Muga, C.; Calvo, J.; Carrillo, A. R.; de Pedro, A. R.; PROMETAL; POWERTRAIN; CIRMETALThis paper describes an application to design axisymmetrical forging pieces and dies, based on design rules and variational geometry. First, axisymmetrical pieces were clasified into families; then forging design rules were identified for draft angles, radius, flash land and preforms. Finally the application was implemented in I/EMS from Intergraph using the Parametric Programming Language (PPL) and the I/FORMS interface. In order to reach a wider range of CAD softwares and hardware platforms a prototype of the application has also been implemented in an Object Oriented Language (C++) and with and X11 based interface.Item A general related variational approach to shape optimum design(1993) Longo, A.; Unzueta, J.; Schaeidt, E.; Alvarez, A.; Anza, J. J.; Centros PRE-FUSION TECNALIA - (FORMER); Desarrollo Corporativo; PROMETALA general variational approach to shape optimum design is presented. The paper is concerned mainly with two fundamental subjects involved within shape optimization methodologies: the Geometric Representation or Design Model definition and the evaluation of shape sensitivities. Within this context, the term variational is related, on one hand, to the use of variational geometry concepts at the level of Design Model and, on the other hand, to the evaluation of sensitivities by means of the material derivative concept or generalized calculus of variations. At the end of the paper, an industrial application, called SIDOMAT, is described, in order to show how these methodologies can be integrated in a shape optimum design system for practical use.Item Metal forming simulation: Numerical efficiency in rolling processes - Part II(1998) Gutierrez, M. A.; Ojanguren, Y. M.; Anza, J. J.; Centros PRE-FUSION TECNALIA - (FORMER)