Determination of Biaxial Flow Stress Using Frictionless Dome Test | Zendy

Adam Groseclose | Zendy; Hyun-Sung Son | Zendy; Jim Dykeman | Zendy; Taylan Altan | Zendy

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Determination of Biaxial Flow Stress Using Frictionless Dome Test

Author(s) -

Adam Groseclose,

Hyun-Sung Son,

Jim Dykeman,

Taylan Altan

Publication year - 2014

Publication title -

procedia engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.32

H-Index - 74

ISSN - 1877-7058

DOI - 10.1016/j.proeng.2014.10.144

Subject(s) - formability , materials science , extrapolation , flow stress , tensile testing , flow (mathematics) , stress (linguistics) , structural engineering , stress–strain curve , ultimate tensile strength , composite material , mechanics , deformation (meteorology) , mathematics , engineering , mathematical analysis , strain rate , physics , linguistics , philosophy

The frictionless dome test can be used to evaluate formability and determine the flow stress curve of sheet materials under biaxial forming conditions. The flow stress curve, obtained from the frictionless dome test can be determined up to larger strains than in tensile test. As a result the need for extrapolation of the stress-strain curve is reduced. The objectives of this study are to (a) for a given sheet material determine K and n values in Hollomon's Law (σ = Kɛn) by using experimental punch force vs. stroke curve and (b) develop the computer program, “PRODOME”, to automate the calculation of K and n values

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