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Hybrid method to determinate the states of deformation and stress in material during the tensile test
Author(s) -
Malag Leszek,
Kukielka Leon
Publication year - 2007
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200701099
Subject(s) - ultimate tensile strength , finite element method , tensile testing , structural engineering , plasticity , materials science , deformation (meteorology) , material properties , dimension (graph theory) , stress (linguistics) , compression (physics) , composite material , mathematics , engineering , linguistics , philosophy , pure mathematics
One of the basic problems occurring in calculations engineering of finite element method (FEM) is to acceptance the suitable form of mathematical model, describing the mechanical properties of the analysed materials as well as to appoint the constants in this model. The macroscopic models of material published in literature, elaborated on the basic tensile test and compression test, which are the basic tests permitting to appoint plasticity properties and ultimate strength. The indeed of factor the influence on value of stresses and strains is the shape and dimension of specimen. The tensile test described in the EN 10002‐1:2001 norm with foundation is the test of averaging the properties ultimate strength the studied specimens. Using these properties in numerical calculations it causes the essential differences between results calculations and experimental measurements occurrence both qualitative and quantitative. The paper presents the new hybrid methodology on macro and micro scale of determining the states of stresses and strains in metallic specimens, using in the uniaxial tensile test. The application was carried out the FEM in ANSYS/LS‐DYNA programme to determinate the stresses and strains in arbitrarily place specimen and in the time duration of the tensile test process. The same examples of numerical simulation are shown. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)