Browsing Artikuluak-Ingeniaritza by Author "715226aa2bdf5e33d203ccf8c92360d8"
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Analysis of the mechanical and microstructural fluctuations of high-strength steels and their effect on bending angle
Muñiz García, Laura; Trinidad Naranjo, Javier; GALDOS, Lander (MDPI, 2023)The quality and complexity demands of manufactured parts in sectors such as automotive and aeronautics lead to narrower process windows. This affects the repeatability and stability of the process, where material properties ... -
An automatic thermo-mechanical testing apparatus for metal forming applications
Agirre, Julen; Abedul Moreno, David; Sáenz de Argandoña, Eneko; Otegi, Nagore; GALDOS, Lander; Erice, Borja (Elsevier, 2023)Dynamic testing of materials is necessary to model high-speed forming processes (e.g. hammer forging, blanking, forming, etc.) and crash/impact behaviour of structures, amongst others. The most common machines to perform ... -
Comparison of the hardening behaviour of different steel families : from mild and stainless steel to advanced high strength steels
Silvestre Soriano, Elena; GALDOS, Lander; Sáenz de Argandoña, Eneko; Mendiguren, Joseba (Elsevier Ltd., 2015)Although steel has been used in vehicles from the automotive industry's inception, different steel gradesare continually being developed in order to satisfy new fuel economy requirements. For example,advanced high strength ... -
Drawbead uplift force analytical model for deep drawing operations
Gil, Imanol; GALDOS, Lander; Mendiguren, Joseba; Otegi, Nagore; Sáenz 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 ... -
Effect of the loading-rate and stress state on the constitutive modelling and fracture of 2205 Duplex stainless steel
Abedul Moreno, David; GALDOS, Lander; Sáenz de Argandoña, Eneko; Erice, Borja (Elsevier, 2024)Shear cutting is a high-speed forming process where material separation is involved. The nature of the process leads to high strain rates and temperatures on the sheared zone of the material subjected to the operation. In ... -
Elastic behaviour characterisation of TRIP 700 steel by means of loading-unloading tests
Mendiguren, Joseba; Gomez-Mitxelena, Xabier; GALDOS, Lander (Elsevier Ltd., 2015)The elastic behaviour of TRIP 700 steel under plastic deformation is analysed. The analysis is carried out by means of classical tensile test and loading–unloading cyclic tests. These tests have been performed using high ... -
Experimental and Numerical Simulation Investigation on Deep Drawing Process of Inconel 718 with and without Intermediate Annealing Thermal Treatments
Ulibarri Hernández, Unai; GALDOS, Lander; Sáenz de Argandoña, Eneko; Mendiguren, 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 ... -
Friction Modelling for Tube Hydroforming Processes : A Numerical and Experimental Study with Different Viscosity Lubricants
GALDOS, Lander; Trinidad Naranjo, Javier; Otegi, Nagore; García-Crespo, Carlos (MDPI, 2022)The final quality of sheet and tube metal–formed components strongly depends on the tribology and friction conditions between the tools and the material to be formed. Furthermore, it has been recently demonstrated that ... -
Hardening prediction of diverse materials using the Digital Image Correlation technique
Agirre, Julen; Mendiguren, Joseba; GALDOS, Lander; Sáenz de Argandoña, Eneko (Elsevier, 2018)In recent years, due to the introduction of higher resistance materials in the automotive sector, sheet metal-forming tool-makers have been forced to deal with more challenging process designs. Therefore, the optimisation ... -
The influence of the kinematic hardening on the FEM simulation of Tension Levelling Process
Garcia, Aitor; Trinidad Naranjo, Javier; Otegi, Nagore; Mendiguren, Joseba; Sáenz de Argandoña, Eneko; GALDOS, 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 ... -
Influence of the pressure dependent coefficient of friction on deep drawing springback predictions
Gil, Imanol; GALDOS, Lander; Mendiguren, Joseba; Sáenz de Argandoña, Eneko; Mugarra Fernandez, Endika (Elsevier Ltd., 2016)The aim of this work is to show the influence of defining a pressure dependent friction coefficient onnumerical springback predictions of a DX54D mild steel, a HSLA380 and a DP780 high strength steel. Thepressure dependent ... -
Integral Design and Manufacturing Methodology of a Reduced-Scale Servo Press
Olaizola, Jon; Esteban Echeverria, Ekaitz; Trinidad Naranjo, Javier; Iturrospe, Aitzol; GALDOS, Lander; Abete, J.M.; Sáenz de Argandoña, Eneko (IEEE, 2021)In a context where industrial production boosts both the society and the economy of a country, improvements in industrial processes are key factors for efficient and reliable development of goods and products. New industrial ... -
The Interaction between the Sheet/Tool Surface Texture and the Friction/Galling Behaviour on Aluminium Deep Drawing Operations
Zabala, Alaitz; GALDOS, Lander; Llavori, Inigo; Aginagalde, Andrea; Mendiguren, Joseba; Sáenz de Argandoña, Eneko (MDPI, 2021)The increasing demands for lightweight design in the transport industry have led to an extensive use of lightweight materials such as aluminium alloys. The forming of aluminium sheets however presents significant challenges ... -
Monitoring of a Hammer Forging Testing Machine for High-Speed Material Characterization
Agirre, Julen; Otegi, Nagore; Abedul Moreno, David; Oruna Otalora, Angel; GALDOS, 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 ... -
New drawbead tester and numerical analysis of drawbeads closure force
Gil, Imanol; Mendiguren, Joseba; GALDOS, Lander; Mugarra Fernandez, Endika; Sáenz de Argandoña, Eneko (Springer, 2021)Currently, a great deal of controversy exists regarding the real forces generated in drawbeads during sheet metal forming processes. The present work focuses on the analysis of the uplift force. First, a detailed literature ... -
Numerical analysis of AISI 321 alloy material parameters on rubber pad diaphragm forming
Sanchez Barros, Pablo; Otegi, Nagore; GALDOS, Lander; Sáenz de Argandoña, Eneko (IOP Publishing, 2022)Rubber pad diaphragm forming is a technology that uses a rigid die in conjunction with a flexible polyurethane tool and fluid pressure action in order to shape metal sheets. In this process, the action of the fluid forms ... -
Numerical simulation of the roll levelling of third generation fortiform 1050 steel using a nonlinear combined hardening material model
GALDOS, Lander; Sáenz de Argandoña, Eneko; Mendiguren, 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, Lander; Sáenz de Argandoña, Eneko; Mendiguren, 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, Imanol; GALDOS, Lander; Otegi, Nagore; Mendiguren, Joseba; Sáenz 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 ... -
On the Use of Advanced Friction Models for the Simulation of an Industrial Stamping Process including the Analysis of Material and Lubricant Fluctuations
Muñiz García, Laura; Trinidad Naranjo, Javier; GALDOS, Lander (MDPI, 2023)The use of numerical simulations for tool tryout and process control is becoming increasingly prevalent. In this work, the deep drawing process of a car inner door panel of DC06 mild steel is numerically analyzed and ...