Constitutive parameter identification of CB2001 yield function and its experimental verification using tube hydroforming tests

2020 ◽  
Vol 185 ◽  
pp. 105868
Author(s):  
Ali Khalfallah ◽  
Marta Cristina Oliveira ◽  
José Luís Alves ◽  
Luís Filipe Menezes
Keyword(s):  
Parameter Identification ◽  
Experimental Verification ◽  
Tube Hydroforming ◽  
Yield Function ◽  
Constitutive Parameter

Process analysis of two-layered tube hydroforming with analytical and experimental verification

2013 ◽  
Vol 27 (1) ◽  
pp. 169-175 ◽  
Author(s):  
S. M. Hossein Seyedkashi ◽  
Valiollah Panahizadeh R ◽  
Haibin Xu ◽  
SangYun Kim ◽  
Young Hoon Moon
Keyword(s):  
Experimental Verification ◽  
Process Analysis ◽  
Tube Hydroforming

Necking Prediction in Tube Hydroforming by Stress-Based Forming Limit Diagrams

2011 ◽  
Vol 462-463 ◽  
pp. 284-288
Author(s):  
A. Jaamialahmadi ◽  
Mehran Kadkhodayan
Keyword(s):  
Tube Hydroforming ◽  
Yield Function ◽  
Forming Limit ◽  
Isotropic Hardening ◽  
Equilibrium Equations ◽  
Forming Limit Diagrams ◽  
Fea Simulation ◽  
Yield Loci ◽  
The Hill ◽  
Practical Forming

Path-independent stress based forming limit diagrams for anisotropic materials along with the Hill 48 yield function; power law strain hardening and isotropic hardening are derived. Bifurcation analyses via solving equilibrium equations of a pointed vertex on subsequent yield loci are utilized. The presented practical forming limit diagrams (FLSDs) show more acceptable agreements with experimental data compared with those obtained by other methods. A typical neck detection macro in APDL is developed by FEA simulation for a free bulge tube hydroforming to confirm the significant simplicity and straightforwardness of the mentioned FLSD.

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