Method for simulating a hydroforming process

Data processing: structural design – modeling – simulation – and em – Modeling by mathematical expression

Reexamination Certificate

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C703S001000

Reexamination Certificate

active

07640144

ABSTRACT:
A method for simulating a hydroforming process includes modeling a virtual hydroforming die and a virtual tubular workpiece. The virtual workpiece is placed within the die after the die has been expanded. The die is then contracted to a finished size while the workpiece is deformed into a non-circular cross section in contact with the virtual die. The workpiece is subsequently pressurized to simulate production of a finished part.

REFERENCES:
patent: 6658909 (2003-12-01), Juedes
patent: 2003/0005738 (2003-01-01), Juedes
patent: 2004/0200550 (2004-10-01), Pfaffmann et al.
patent: 2006/0117825 (2006-06-01), Pfaffmann et al.
“Optimization of Process and Tool Development for Hydroformed Frame Rail Using FEM Simulation”, by Jay Liu & Don Hahn, ASE-2000-01-0408.
“Tube Hydroforming Process Development with the Aid of Computer Simulation”, by Jay Liu, SAE-2001-01-1134, 2001.
“Cutting Lead-Time and Development Costs of Hydroformed Parts by FEM Simulation”, by Rosanna Brun, Manuel Lai, Xiangping Li and Angelo Messina, SAE-1997-20-0090, 1997.

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