Investigation on sheet hydroforming of tailor-welded blanks and comparison with conventional deep drawing

Mahdi Qarakhani¹, Abolfazl Masoumi¹, Mohammad Habibi Parsa², Alireza Arayee¹

¹Department of Mechanical Engineering, Faculty of Engineering
²Department of Metallurgy and Materials Engineering, Faculty of Engineering University of Tehran, P.O.Box 11155/4563.

DOI:

https://doi.org/10.7494/cmms.2009.1.0223

Abstract:

In this investigation, finite element simulations were carried out using commercial explicit finite element program to determine the formability characteristics of laser welded sheets during hydroforming process. Steel blank sheets (St14) with different thickness were combined together to form three different tailor-welded models ((0.8-1), (0.8-1.2) and (11.2) mm). During the sheet hydroforming process of these models, thickness strain distribution and biaxial in plane strain are investigated and in order to prediction of local thinning compared with maximum allowable biaxial strain of the sheet material defined by FLD diagrams. The simulation results indicate that even with difference in thicknesses, steel tailorwelded blanks can produce superior deep drawn parts with hydroforming process. Simulation results have been compared with results of conventional deep drawing process.

Cite as:

Qarakhani, M., Masoumi, A., Parsa, M., & Arayee, A. (2009). Investigation on sheet hydroforming of tailor-welded blanks and comparison with conventional deep drawing. Computer Methods in Materials Science, 9(1), 159 – 165. https://doi.org/10.7494/cmms.2009.1.0223

Article (PDF):

Keywords:

Tailor welded blanks, Hydroforming, Laser welding, Deep drawing, Strain distribution

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