Gas Detonation Forming by a Mixture of H2+O2 Detonation
Explosive forming is one of the unconventional
techniques in which, most commonly, the water is used as the
pressure transmission medium. One of the newest methods in
explosive forming is gas detonation forming which uses a normal
shock wave derived of gas detonation, to form sheet metals. For this
purpose a detonation is developed from the reaction of H2+O2
mixture in a long cylindrical detonation tube. The detonation wave
goes through the detonation tube and acts as a blast load on the steel
blank and forms it. Experimental results are compared with a finite
element model; and the comparison of the experimental and
numerical results obtained from strain, thickness variation and
deformed geometry is carried out. Numerical and experimental
results showed approximately 75 – 90 % similarity in formability of
desired shape. Also optimum percent of gas mixture obtained when
we mix 68% H2 with 32% O2.
[1] Vovk VT (1999) Gasexplosion als ÔÇÿÔÇÿWerkzeug-- in der
Fertigungstechnik.Habilitation, Magdeburg Univ., Magdeburg.
[2] A. Honda, M. Suzuki, Sheet metal forming by using gas imploding
detonation, J. Mater. Process. Technol. 85 (1999) 198-203.
[3] I. Fukuda, M. Ohmari, M. Fujita, The effect of shock pressure on the
mechanical properties of some b.c.c. metals, J. Mater. Process. Technol.
85 (1999) 180-183.
[4] Meyers MA. Dynamic behaviour of materials. New York: John Wiley &
Sons, Inc; 1996.
[5] Johnson GR, Cook WH. A constitutive model and data for metals
subjected to large strains, high strain rates and high temperatures. In:
Presented at the seventh international symposium on ballistics, The
Hague, The Netherlands, April 1983.
[6] Johnson GR, Hoegfeldt JM, Lindholm US, Nagy A. ASME J Eng Mater
Technol 1983; 105:42.
[7] I. Kadı, Detonasyon Olaylarının Bilgisayar Destekli Ölçme ve Analizi,
Ph.D. Thesis, Marmara Üniversitesi Fen Bilimleri Enstitüsü, Istanbul,
1992.
[8] Yasar M. Yuksek H─▒zda Sekillendirilen Aluminyum Alas─▒mlar─▒nda
Olusan Deformasyonun. Incelenmesi, PhD Thesis, Marmara Universitesi
Fen Bilimleri Enstitusu, Istanbul, 2001.
[9] Sheet metal forming by gas detonation forming; A.A.Pashaei,
A.Darvizeh , M.Sc. Thesis, The University of Guilan, Rasht, Iran.
[1] Vovk VT (1999) Gasexplosion als ÔÇÿÔÇÿWerkzeug-- in der
Fertigungstechnik.Habilitation, Magdeburg Univ., Magdeburg.
[2] A. Honda, M. Suzuki, Sheet metal forming by using gas imploding
detonation, J. Mater. Process. Technol. 85 (1999) 198-203.
[3] I. Fukuda, M. Ohmari, M. Fujita, The effect of shock pressure on the
mechanical properties of some b.c.c. metals, J. Mater. Process. Technol.
85 (1999) 180-183.
[4] Meyers MA. Dynamic behaviour of materials. New York: John Wiley &
Sons, Inc; 1996.
[5] Johnson GR, Cook WH. A constitutive model and data for metals
subjected to large strains, high strain rates and high temperatures. In:
Presented at the seventh international symposium on ballistics, The
Hague, The Netherlands, April 1983.
[6] Johnson GR, Hoegfeldt JM, Lindholm US, Nagy A. ASME J Eng Mater
Technol 1983; 105:42.
[7] I. Kadı, Detonasyon Olaylarının Bilgisayar Destekli Ölçme ve Analizi,
Ph.D. Thesis, Marmara Üniversitesi Fen Bilimleri Enstitüsü, Istanbul,
1992.
[8] Yasar M. Yuksek H─▒zda Sekillendirilen Aluminyum Alas─▒mlar─▒nda
Olusan Deformasyonun. Incelenmesi, PhD Thesis, Marmara Universitesi
Fen Bilimleri Enstitusu, Istanbul, 2001.
[9] Sheet metal forming by gas detonation forming; A.A.Pashaei,
A.Darvizeh , M.Sc. Thesis, The University of Guilan, Rasht, Iran.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:56766", author = "Morteza Khaleghi Meybodi and Hossein Bisadi", title = "Gas Detonation Forming by a Mixture of H2+O2 Detonation", abstract = "Explosive forming is one of the unconventional
techniques in which, most commonly, the water is used as the
pressure transmission medium. One of the newest methods in
explosive forming is gas detonation forming which uses a normal
shock wave derived of gas detonation, to form sheet metals. For this
purpose a detonation is developed from the reaction of H2+O2
mixture in a long cylindrical detonation tube. The detonation wave
goes through the detonation tube and acts as a blast load on the steel
blank and forms it. Experimental results are compared with a finite
element model; and the comparison of the experimental and
numerical results obtained from strain, thickness variation and
deformed geometry is carried out. Numerical and experimental
results showed approximately 75 – 90 % similarity in formability of
desired shape. Also optimum percent of gas mixture obtained when
we mix 68% H2 with 32% O2.", keywords = "Explosive forming, High strain rate, Gas detonation,Finite element analysis.", volume = "3", number = "9", pages = "1067-4", }