Effect of shape of ultimate surface on description of concrete deformation by relations of flow theory
V. M. Levin, S. V. Shabelnik
Donbas National Academy of Civil Engineering and Architecture
Annotation: The relations of the flow theory oriented to description of the deformation process of concrete at application of the isotropic model of hardening have been analyzed. Three ultimate surfaces of various shapes have been considered and the effect estimation of the shape to the straining relations have been made. The study tested the ability of application of a hardening function produced from the considered experiment but not the experiment to uniaxial compression as usual in other researchers. The calculated data have been compared with experimental data of H. Kupfer and A. Bambura. The simple (biaxial compression, compression-tension) and complex loading (biaxial compression) have been considered in the paper. The approximation errors of experimental data by suggested relations have been presented in the paper. It has been shown that the application of considerably more sufficient boundary conditions transform to error approximation reduction of the experimental data at least for the principal compressive stress direction up to the acceptable level both for biaxial compression region and for compression_tension region. The boundary condition version providing a sufficiently good correspondence of the calculated and experimental data. The subsequent progress of the model further development of the model assumes improvement of the law of reinforcement and demands execution of experiments on the concrete specimens in conditions of combined loading.
Keywords: concrete, flow theory, deformations/strains, error, ultimate surface.
Pages: 195-201.
Link for citation: Levin, V. M.; Shabelnik, S. V. Effect of shape of ultimate surface on description of concrete deformation by relations of flow theory. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2013. – Vol. 9, N 4. – Р. 195-201. – URL: https://donnasa.ru/publish_house/journals/spgs/2013-4/02_Levin_Shabelnik.pdf (date of access: 19.09.2024). (in Russian)
Vol. 9, N 4 (2013)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture