Prediction of bulge height in warm hydroforming of aluminum tubes using ductile fracture criteria

• Autorzy: Hashemi S. J. , Moslemi Naeini H. , Liaghat G. H. , Azizi Tafti R.

Identyfikatory

DOI

10.1016/j.acme.2014.08.003

• Języki publikacji: EN

Abstrakty

EN

Warm hydroforming is used widely to increase the formability of aluminum and magnesium tubes. Prediction of forming limit is a vital problem in designing the warm hydroforming process of tubes. In this paper, bulge height of aluminum tubes AA6063 is predicted using ductile fracture criteria at high temperatures. Ductile fracture criteria were calibrated by performing several uniaxial tensile tests at different temperatures and strain rates. Fracture strain and work functions were obtained based on Zener–Holloman parameter. Free bulging process of tubes was simulated using finite element method and different loading curves were used to bulge the tubes. Prediction of ductile fracture was compared with the experimental results measured on a warm free bulging set-up. The comparison shows that Ayada ductile fracture criterion is able to predict the bulge height of aluminum tubes at high temperatures.

Słowa kluczowe

EN

warm tube hydroforming; ductile fracture criteria; bulge height

PL

hydroformowanie rur; rura aluminiowa; kryteria pękania

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2015
• Tom: Vol. 15, no. 1
• Strony: 19--29
• Opis fizyczny: Bibliogr. 20 poz., rys., wykr.

Twórcy

autor

Hashemi S. J.

• Department of Mechanical Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran, Islamic Republic of Iran

autor

Moslemi Naeini H.

• Department of Mechanical Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran, Islamic Republic of Iran

autor

Liaghat G. H.

• Department of Mechanical Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran, Islamic Republic of Iran

autor

Azizi Tafti R.

• Department of Mechanical Engineering, Faculty of Engineering, Yazd University, P.O. Box 89195-741, Yazd, Islamic Republic of Iran

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