A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Investigation of Advanced Constitutive Models for Ultra-High Performance Concrete Against High Velocity Impact
Ultra-high performance fiber reinforced concrete (UHPFRC) has gained popularity for high-strain rate applications due to its high compressive and tensile strength along with high toughness and better durability. Such applications require robust material models that can simulate extreme response under complex loading conditions. Behavior of concrete under high strain rate loading, such as blast or impact, is complex, and hence calibration of material model becomes an important factor. In present paper, four concrete material models, i.e. Karagozian and Case concrete (KCC) model, continuous surface cap (CSC) model, Homlquist-Johnson-Cook (HJC) model and Riedel-Hiermaier-Thoma (RHT), were investigated for simulating the behavior of UHPFRC in LS-DYNA. The key parameters of each material model that govern stress–strain behavior were identified and calibrated through single element analysis using uniaxial stress–strain behavior in compression and tension. The calibrated material models were used to compare static compressive and tensile stress–strain behavior of UHPFRC against experimental data. The ability of the calibrated material models to capture response of UHPFRC was investigated through high-velocity impact test on UHPFRC specimen. Finally, based on current findings, it was recommended that the calibrated material models KCC and RHT are suitable for simulating UHPFRC behavior under high-velocity impact.
Investigation of Advanced Constitutive Models for Ultra-High Performance Concrete Against High Velocity Impact
Ultra-high performance fiber reinforced concrete (UHPFRC) has gained popularity for high-strain rate applications due to its high compressive and tensile strength along with high toughness and better durability. Such applications require robust material models that can simulate extreme response under complex loading conditions. Behavior of concrete under high strain rate loading, such as blast or impact, is complex, and hence calibration of material model becomes an important factor. In present paper, four concrete material models, i.e. Karagozian and Case concrete (KCC) model, continuous surface cap (CSC) model, Homlquist-Johnson-Cook (HJC) model and Riedel-Hiermaier-Thoma (RHT), were investigated for simulating the behavior of UHPFRC in LS-DYNA. The key parameters of each material model that govern stress–strain behavior were identified and calibrated through single element analysis using uniaxial stress–strain behavior in compression and tension. The calibrated material models were used to compare static compressive and tensile stress–strain behavior of UHPFRC against experimental data. The ability of the calibrated material models to capture response of UHPFRC was investigated through high-velocity impact test on UHPFRC specimen. Finally, based on current findings, it was recommended that the calibrated material models KCC and RHT are suitable for simulating UHPFRC behavior under high-velocity impact.
Investigation of Advanced Constitutive Models for Ultra-High Performance Concrete Against High Velocity Impact
Lecture Notes in Civil Engineering
Kumar, Ratnesh (editor) / Bakre, Sachin V. (editor) / Goel, Manmohan Dass (editor) / Korde, Shreya (author) / Kumar, Manish (author) / Nanthagopalan, Prakash (author)
Structural Engineering Convention ; 2023 ; Nagpur, India
2024-11-24
13 pages
Article/Chapter (Book)
Electronic Resource
English
| British Library Online Contents | 2018
| British Library Online Contents | 2018
Experimental Study on Ultra-High Performance Concrete Columns Against Low-Velocity Impact
| Springer Verlag | 2019
A constitutive relationship for high performance and ultra high performance concrete
| British Library Conference Proceedings | 1998