Finite Element Simulation on Superplastic Forming of Outer Jacket of Combustion Chamber

Abstract:

In this paper, mould configurations are studied by finite element simulation for superplastic blow forming of combustion chamber outer jacket. One concave and two convex mould configurations are basically considered to determine which type would be advantageous in terms of forming time and thickness distribution. For the simulation, the flow stress equation of duplex stainless steel was determined from free bulging test. The simulation results showed that the concave type was quit a bit different from the other two cases. The concave mould configuration produced shorter forming time and thicker thickness distribution than the others, and it seems to be more effective for superplastic forming of outer jacket. The obtained pressure profile for the concave mould configuration was employed in actual forming and the thickness distribution was compared for the verification.

• Periodical: Key Engineering Materials (Volume 433)
• Pages: 219-224
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.433.219
• Online since: March 2010
• Authors: Jong Hoon Yoon, Yeong Moo Yi, Ho Sung Lee
• Keywords: Combustion Chamber, Concave Forming, Convex Forming, Finite Element, Mould Configuration, Outer Jacket, Simulation, Super Plastic Forming (SPF)

References

[1] K. R. Carolyn and C. Robert: J. Propulsion and Power Vol. 23 (2007), p.756.

[2] C. S. Yoo and H. S. Choi: Trans. Korea Society of Aeronautical and Space Sicences Vol. 36 (2008), p.271.

[3] J. H. Yoon, Y. M. Yi and H. S. Lee: Proc. EUROSPF 2008, http: /hal. archives-ouvertes. fr/hal-00339332/fr.

[4] MSC. Marc Mantat 2005R2 Manual Vol. A.