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Mostrando ítems 1-10 de 21
Ponencia
Preliminary investigation on homogenization of the thickness distribution in hole-flanging by SPIF
(Elsevier, 2017-06)
A drawback of the hole-flanging process by single-stage SPIF is the non-uniform thickness obtained along the flange. Multi-stage strategies have been used to improve it, however they increase notably the manufacturing time. ...
Artículo
Influencia en la vida a fatiga de la presencia de rebaba en la intercara en uniones híbridas de aluminio CFRP remachadas
(Grupo español de fractura, 2015)
Las uniones remachadas hibridas de metal-composite se usan extensivamente en aeronáutica. El presente trabajo presenta un estudio experimental sobre la influencia en la resistencia a fatiga de la existencia de la rebaba ...
Artículo
Plastic flow equations for the local strain approach in the multiaxial case
(Gruppo Italiano Frattura (IGF), 2016)
This paper presents a system of plastic flow equations which uses and generalizes to the multiaxial case a number of concepts commonly employed in the so-called Local Strain Approach to low cycle fatigue. Everything is ...
Ponencia
Numerical study on the thickness homogenization in hole-flanging by single-point incremental forming
(Institute of Physics Publishing, 2018-08)
Incremental sheet forming is a novel technology that has significant benefits compared to conventional forming. However, it is a time-consuming process that is usually carried out in several forming stages to homogenize ...
Artículo
Analysis of the influence of stress triaxiality on formability of hole-flanging by single-stage SPIF
(Elsevier, 2019-02)
Traditionally the fracture in sheet metal forming is characterized by the fracture forming limit (FFL) curve typically obtained by using conventional Nakajima tests. This curve is implicitly assumed a material property. ...
Ponencia
Experimental Study on the Evaluation of Necking and Fracture Strains in Sheet Metal Forming Processes
(Elsevier, 2013)
In this paper the formability of AA2024-T3 metal sheets is experimentally analyzed. For this purpose, a series of StretchBending and Incremental Sheet Forming (ISF) tests are carried out. The former tests allow determine ...
Artículo
Aplicación de un modelo micromecánico de crecimiento de grieta de dos umbrales a fatiga por fretting
(Grupo español de fractura, 2012)
El presente trabajo muestra una estimación de la velocidad de crecimiento de grieta por fatiga debido a cargas producidas por fretting. Esto se realiza utilizando el modelo de crecimiento de grieta de dos umbrales, ...
Tesis Doctoral
Análisis del efecto del gradiente de deformaciones en el conformado de Chapa Metálica
(2012-08-01)
Los procesos de conformado de chapa se usan extensivamente para fabricar carrocerías de automóviles, fuselajes de aeronaves, revestimientos de electrodomésticos, etc. Los principales problemas de conformabilidad en tales ...
Tesis Doctoral
Analysis of single stage SPIF process applied to the hole flanging operation.
(2018-11-09)
Tradicionalmente, las operaciones de rebordeado se llevan a cabo en la industria mediante técnicas de prensado convencionales utilizando punzón y troquel. Sin embargo, investigaciones recientes en conformado incremental ...
Ponencia
Experimental and numerical analysis of the flanging process by SPIF
(Institute of Physics Publishing, 2018-08)
This paper analyses the flangeability of AA2024-T3 sheets using single point incremental forming (SPIF). With this purpose, a series of process parameters is considered including flange length and width, tool radius and ...