TY - JOUR ID - 4581 TI - Multi-laminate rate-dependent modelling of static and dynamic concrete behaviors through damage formulation JO - Scientia Iranica JA - SCI LA - en SN - 1026-3098 AU - Sadrnejad, S.A. AU - Hoseinzadeh, M.R. AD - Civil Engineering Faculty, K. N. Toosi University of Technology, No. 1346, ValiAsr Ave., Mirdamad Cross, Tehran, Iran. Y1 - 2019 PY - 2019 VL - 26 IS - 3 SP - 1194 EP - 1205 KW - Multi-Laminate KW - Rate dependent KW - Damage KW - Nonlinear Behavior KW - Quasi-Brittle Materials KW - concrete DO - 10.24200/sci.2017.4581 N2 - Mathematical simulation of the nonlinear tri-dimensional mechanical behavior of quasi-brittle materials like concrete is one of the biggest challenges in the engineering science. It is vital to have the knowledge of the response of concrete specimens subjected to low and high strain rate deformation for the analysis of concrete structures under the static and dynamic loading cases. The behavior of this material is generally known to be strain rate sensitive. Among phenomena of different orientation, the multi plane models, like multi-laminate models using a constitutive equation in a vectorial form rather than tensorial form by means of capturing interactions, can meet this goal adequately. This paper suggests a robust rate dependent damage based model in the multi-planes framework accomplished with minimum parameters for calibration and appropriate for engineering purposes. This damage formulation has been built on the basis of two types of essential damage, axial damage and shear damage, that basically can happen on each sampling plane and based on this concept two new axial and shear damage functions are proposed. Model verification has been studied under different compressive and tensile loading rates, comparing the results of the proposed model with the experimental data and Mohr-Coulomb failure criterion envelope line. UR - https://scientiairanica.sharif.edu/article_4581.html L1 - https://scientiairanica.sharif.edu/article_4581_efa810d11e21115bad4f4c92a17a0a26.pdf ER -