Browsing by Author "Galdos Errasti, Lander"

Now showing items 1-16 of 16

    • Análisis de los esfuerzos generados en los frenos de embutición y desarrollo de un modelo semi-analítico de predicción de los esfuerzos de enclavamiento 

      Gil Acedo, Imanol (Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2017)
      Embutizio frenoak automobil komponenteen embutizio prozesua kontrolatzeko eta prozesu egokia lortzeko elementu funtsezkoenetariko bat da. Fabrikazio prozesu simulazioaren konputazio denboraren murrizketa beharra dela eta, ...

    • Drawbead uplift force analytical model for deep drawing operations 

      Gil Acedo, Imanol; Galdos Errasti, Lander; Mendiguren Olaeta, Joseba; Otegi Martínez, Nagore; Saénz de Argandoña, Eneko (IOP Publishing Ltd., 2018)
      Drawbead uplift force calculation has been an open issue among the deep drawing tool maker and software developers in the last years. Starting from the original work of Stoughton (1988) many have been the models presented ...

    • Experimental and numerical analysis of the elastic behaviour of the TRIP 700 steel for springback predictions 

      Mendiguren Olaeta, Joseba (Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2012)
      The demand for lightweight fuel-efficient vehicles and the increasing industrial competitiveness between constructors have motivated the automotive industry to introduce new materials and to reinforce the accuracy of metal ...

    • Experimental and Numerical Simulation Investigation on Deep Drawing Process of Inconel 718 with and without Intermediate Annealing Thermal Treatments 

      Ulibarri Hernández, Unai; Galdos Errasti, Lander; Saénz de Argandoña, Eneko; Mendiguren Olaeta, Joseba (MDPI AG, 2020)
      The aeronautical industry is moving from high-capacity large-airplane construction to low-capacity small-airplane construction. With the change in the production volume, there is a need for more e cient manufacturing ...

    • Glass coating effects on Ti-6Al-4V hot forging 

      Sethy, Ritanjali (Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2017)
      Hot forging processes are highly influenced by the contact conditions between the work piece and the dies. An inaccurate definition of the contact conditions may lead to high deviation predictions of the final component ...

    • The influence of the kinematic hardening on the FEM simulation of Tension Levelling Process 

      Garcia, Aitor; Trinidad Naranjo, Javier; Otegi Martínez, Nagore; Mendiguren Olaeta, Joseba; Saenz de Argandoña, Eneko; Galdos Errasti, Lander (Elsevier Ltd., 2020)
      Tension levelling is used in the steel industry to remove shape defects present in cold rolled strip. This technology is increasingly being employed by steel makers to level AHSS steels, because conventional roll levelers ...

    • Monitoring of a Hammer Forging Testing Machine for High-Speed Material Characterization 

      Agirre Bikuña, Julen; Otegi Martínez, Nagore; Abedul Moreno, David; Oruna Otalora, Ángel; Galdos Errasti, Lander (Elsevier Ltd., 2020)
      Dynamic testing of materials is necessary to model high-speed forming processes (i.e. hammer forging, blanking) and crash/impact behavior of structures, among others. The most common machines to perform medium to high-speed ...

    • Numerical simulation of the roll levelling of third generation fortiform 1050 steel using a nonlinear combined hardening material model 

      Galdos Errasti, Lander; Saénz de Argandoña Fernández de Gorostiza, Eneko; Mendiguren Olaeta, Joseba; Silvestre Soriano, Elena (IOP Publishing Ltd, 2017)
      Elasto–plastic behavior of the third generation Fortiform 1050 steel has been analysed using cyclic tension–compression tests. At the same time, the pseudo elastic modulus evolution with plastic strain was analysed using ...

    • Numerical simulation of U-Drawing test of Fortiform 1050 steel using different material models 

      Galdos Errasti, Lander; Saénz de Argandoña Fernández de Gorostiza, Eneko; Mendiguren Olaeta, Joseba; Mugarra Fernandez, Endika; Ulibarri Hernández, Unai (Elsevier Ltd., 2017)
      Steel has been used in vehicles from the automotive industry's inception. Different steel grades are continually being developed in order to satisfy new fuel economy requirements. For example, advanced high ...

    • On the accurate characterization of the drawbead up-lift forces 

      Gil Acedo, Imanol; Galdos Errasti, Lander; Otegi Martínez, Nagore; Mendiguren Olaeta, Joseba; Saénz de Argandoña, Eneko (IOP Publishing Ltd., 2018)
      The competitiveness of the automotive sector has led to a high demand of accuracy and reduction in lead-time of the deep drawing tool making process. In that regard, the numerical simulation of the deep drawing process has ...

    • Optimization of superplastic forming production of Al-5083-SPF parts via finite element analysis 

      Otegi Martínez, Nagore (Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2012)
      For the aerospace industry, improving the fuel efficiency and emissions profile of aircraft is a major area of focus. Thereby, research is centred in the study and development of lightweight materials and in fabrication ...

    • Press hardening of alternative materials: conventional high- strength steels 

      Mendiguren Olaeta, Joseba; Herrero Dorca, Nuria; Galdos Errasti, Lander; Saénz de Argandoña Fernández de Gorostiza, Eneko (Springer Nature, 2017)
      he increase in strength of new high strength steels(HHS) and advanced high strength steels (AHHS) has led toforming issues, such as high springback, low formability, increase of forming forces and tool wear. These problems ...

    • Roll levelling semi-analytical model for process optimization 

      Silvestre Soriano, Elena; Galdos Errasti, Lander; Saénz de Argandoña Fernández de Gorostiza, Eneko; Mendiguren Olaeta, Joseba (IOP, 2016)
      Roll levelling is a primary manufacturing process used to remove residual stresses and imperfections of metal strips in order to make them suitable for subsequent forming operations. In the last years the importance of ...

    • Sensitivity analysis on an AC600 aluminum skin component 

      Mendiguren Olaeta, Joseba; Saénz de Argandoña Fernández de Gorostiza, Eneko; Galdos Errasti, Lander; Mugarra Fernandez, Endika (IOP, 2016)
      New materials are been introduced on the car body in order to reduce weight and fulfil the international CO2 emission regulations. Among them, the application of aluminum alloys is increasing for skin panels. Even if these ...

    • Study on the influence of the springback on the hole expansion ratio characterization 

      Zubia Arrizabalaga, Biotza; Mendiguren Olaeta, Joseba; Galdos Errasti, Lander; Saénz de Argandoña Fernández de Gorostiza, Eneko; Agirre Bikuña, Julen (Whioce Publishing, 2018)
      Material formability has become one of the main problems, together with the springback, when stamping high added-value components for the automotive industry. The pursuit of weight reduction has led to higher strength ...

    • U-drawing of Fortiform 1050 third generation steels. Numerical and experimental results 

      Saénz de Argandoña Fernández de Gorostiza, Eneko; Galdos Errasti, Lander; Mendiguren Olaeta, Joseba; Otero Gorrochategui, Irune; Mugarra Fernandez, Endika (IOP Publishing Ltd, 2017)
      Elasto–plastic behavior of the third generation Fortiform 1050 steel has been analysed using cyclic tension–compression tests. At the same time, the pseudo elastic modulus evolution with plastic strain was analysed using ...