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Structural Engineering and Mechanics Volume 63, Number 2, July25 2017 , pages 207-215 DOI: https://doi.org/10.12989/sem.2017.63.2.207 |
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Numerical and theoretical modelling of low velocity impact on UHPC panels |
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Prabhat R. Prem, Mohit Verma, A. Ramachandra Murthy, J. Rajasankar and B.H. Bharatkumar
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| Abstract | ||
| The paper presents the studies carried out on low velocity impact of Ultra high performance concrete (UHPC) panels of size 350X350X10 mm3 and 350X350X15 mm3. The panels are cast with 2 and 2.5% micro steel fibre and compared with UHPC without fiber. The panels are subjected to low velocity impact, by a drop-weight hemispherical impactor, at three different energy levels of 10, 15 and 20 J. The impact force obtained from the experiments are compared with numerically obtained results using finite element method, theoretically by energy balance approach and empirically by nonlinear multigenetic programming. The predictions by these models are found to be in good coherence with the experimental results. | ||
| Key Words | ||
| ultra high performance concrete; low velocity impact; finite element; energy balance model; empirical relation | ||
| Address | ||
| Prabhat R. Prem, Mohit Verma, A. Ramachandra Murthy, J. Rajasankar and B.H. Bharatkumar : CSIR-Structural Engineering Research Centre, Chennai, 600 113, India | ||