Engineering Mechanics

Proceedings Vol. 7 (2001)

INŽENÝRSKÁ MECHANIKA 2001

ENGINEERING MECHANICS 2001

Copyright © 2001 Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Prague

 

Vítek K., Holý S., Štěrba P.
pages 283 - +4p, full text

Computational approach to structural or limit state assessment needs better knowledge of material qualities as one of the basic inputs. The methodology of determining the construction materials' elastic constants is based on the mechanical tests, being mostly tensile tests, of partially loaded specimens (macro-specimens). The elastic constants obtained are applied mainly when a computer-aided modelling structure is used which considerably advanced due to computer techniques development in the last years (to obtain a deeper understanding of occurring phenomena, it is necessary to find out the (Y-[! distribution as far as to the ultimate strength of specimens taken from various structure localities, instead of the simple knowledge of Young's modulus of elasticity and Poisson 's ratio). Therefore it is necessary to define more precisely the inputs introduced into the modelling processes, in order to utilize properly the expensive computational analyticsynthetic technologies. In this case, it is demonstrated how to correct results from special specimes by means of notch correction of measured strains. These corrections are based on calculation which uses finite element method.

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