A computational constitutive model for concrete subjected to dynamic loadings. (May 2016)

• Record Type: Journal Article
• Authors: Xu, H.; Wen, H.M.
• Is Part Of: International journal of impact engineering. Volume 91(2016:May)
• Page Start: 116
• Page End: 125
• Publication Date: 2016-05
• Subjects: Computational constitutive model -- Numerical simulation -- Single element simulation -- Numerical SHPB test; Impact -- Periodicals; Shock (Mechanics) -- Periodicals; Impact -- Périodiques; Choc (Mécanique) -- Périodiques; Impact; Shock (Mechanics); Periodicals; 620.1125
• DOI: 10.1016/j.ijimpeng.2016.01.003
• Languages: English
• ISSNs: 0734-743X

Abstract

Highlights: A computational constitutive model for concrete subjected to dynamic loadings has been proposed. The model is first proposed for concrete under uniaxial unconfined compression/tension, and then extended to total stress space by considering pressure dependency and Lode effect. The newly developed constitutive model is compared with the HJC, RHT and K&C models by employing single element simulation approach and numerical SHPB tests. Abstract: A computational constitutive model for concrete subjected to dynamic loadings is proposed in this paper. The equation of state is described by P ~ α relationship. The strength model is first proposed for concrete under uniaxial unconfined compression/tension by taking account of strain hardening and softening, dynamic enhancement excluding inertial effect, and then extended to total stress space by taking into consideration the pressure dependency and Lode effect. The newly developed constitutive model is compared with the HJC, RHT and K&C models by employing single element simulation approach and numerical SHPB tests. It transpires that the newly-developed constitutive model for concrete is advantageous over the existing models.