On low-energy impact response of ultra-high performance concrete (UHPC) panels

This paper presents the experimental, numerical and analytical investigations carried out to understand the low-energy impact response of ultra-high performance concrete (UHPC) panels for different fiber volume, thickness and impactor energy. Concrete panels of sizes 350×350×10mm and 350×350×15mm we...

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Bibliographic Details
Published in:Materials & design 2016-02, Vol.92, p.853-865
Main Authors: Verma, Mohit, Prem, Prabhat Ranjan, Rajasankar, J., Bharatkumar, B.H.
Format: Article
Language:English
Subjects:
Computer simulation
Concretes
FEM
Fiber volume
Finite element method
Impact response
Impactors
Low-energy impact
Mathematical analysis
Panels
SPH
Spring-mass models
UHPC
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Summary:This paper presents the experimental, numerical and analytical investigations carried out to understand the low-energy impact response of ultra-high performance concrete (UHPC) panels for different fiber volume, thickness and impactor energy. Concrete panels of sizes 350×350×10mm and 350×350×15mm were cast with three different fiber volumes — 0% (R1), 2% (R2) and 2.5% (R3). Two panels with mix R2 and one with mix R1 and R3 were cast for each impactor energy and panel thickness. The impact tests were performed with a 10mm diameter drop-weight hemispherical impactor of mass 5.41kg for three energy levels (10, 15 and 20J). The impact response of UHPC panels was predicted using finite element simulation and spring-mass models. The results obtained from FEM and spring-mass models corroborate well with those obtained from the experiments (R2 > 0.8 and mean absolute percentage error (MAPE)
ISSN:0264-1275
1873-4197
DOI:10.1016/j.matdes.2015.12.065