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Inverse Analysis of Tensile Tests
Author(s) -
Szeliga Danuta,
Gawad Jerzy,
Pietrzyk Maciej,
Kuziak Roman
Publication year - 2005
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200506099
Subject(s) - materials science , finite element method , ultimate tensile strength , elongation , isothermal process , inverse , deformation (meteorology) , stress (linguistics) , mechanics , radius , flow stress , sensitivity (control systems) , rheology , tensile testing , boundary value problem , strain rate , work (physics) , structural engineering , composite material , mathematics , thermodynamics , mathematical analysis , geometry , physics , engineering , computer science , linguistics , philosophy , computer security , electronic engineering
Application of the inverse analysis to the interpretation of hot tensile tests is the main objective of the work. Tensile tests were performed for carbon‐manganese steel samples at 1000°C and at three ram velocities. The measured temperature distribution was used as boundary condition in the finite element model of the direct problem. Recorded loads and elongation of the sample were used as input for the inverse analysis. The flow stress, recalculated for isothermal conditions and constant strain rate deformation, was determined as a function of strain up to the maximum deformations achieved in the neck. Validation of the flow stress model based on comparison of the measured loads with the finite element predictions for the developed Theological model, confirmed reasonably good accuracy of the procedure. Additionally, sensitivity of the measured parameters (loads and radius of the neck at certain elongation) with respect to the rheological parameters has been performed.