An improved calibration of the concrete damage model

• Published in: Finite elements in analysis and design Vol. 47; no. 11; pp. 1280 - 1290
• Main Authors: Markovich, Natalia, Kochavi, Eytan, Ben-Dor, Gabi
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.11.2011; Elsevier
• Subjects: Applied sciences; Building structure; Buildings. Public works; Calibration; Computer simulation; Concrete; Concrete structure; Concretes; Concretes. Mortars. Grouts; Constitutive model; Construction (buildings and works); Damage; Design engineering; Exact sciences and technology; Fracture mechanics (crack, fatigue, damage...); Fundamental areas of phenomenology (including applications); High-performance concrete; High-strength concrete; Loads (forces); LS-Dyna; Materials; Mathematical analysis; Mathematical models; Numerical simulation; Physics; Reinforced concrete; Solid mechanics; Structural and continuum mechanics; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); LS-Dyna; Constitutive model; Numerical simulation; High-strength concrete; Concrete; Damage; High-performance concrete; Constitutive equation; Data compression; Compressive strength; Triaxial test; Modeling; Dynamic conditions; Static load; Combined load; Finite element method; Static conditions; Model matching; Damaging; High performance; Calibration; Compression test; Triaxial compression; Concrete construction; High strength concrete; Dynamic load
• ISSN: 0168-874X; 1872-6925
• DOI: 10.1016/j.finel.2011.05.008

The Concrete Damage Model that is implemented in the LS-Dyna code is capable of simulating the behavior of plain concrete under complex static and dynamic loading conditions. However, the values for the numerous parameters, which are required as an input, are left for the user to provide. In this study the Concrete Damage Model was calibrated for a wide range of strong concretes, using triaxial-compression-test data that were obtained from the literature. In contrast, the adjustment of the parameters of the present model is provided as a function of the unconfined compressive strength of the concrete. Although, not enough validation has been done either in higher pressures or in actual tests, it is evident that the presently calibrated model shows better agreement with published test results than the model currently available in LS-Dyna. ► LS-Dyna's Concrete Damage Model is calibrated for a wide range of concretes. ► Test data obtained from the literature was used. ► Only the maximum strength of a specific concrete has to be provided. ► All other parameters are automatically generated. ► Our improved model performs better than the one currently implemented.