Open AccessExperimental and Numerical Investigation on Reinforced Concrete Slab under Low Velocity Impact Loading
Author(s) -
K. Senthil,
Ziyad Kubba,
Rachit Sharma,
Ankush Thakur
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1090/1/012090
Subject(s) - slab , materials science , structural engineering , finite element method , failure mode and effects analysis , pendulum , reinforced concrete , strain rate , impact , plasticity , impact resistance , composite material , engineering , mechanical engineering
The effect of out plane dynamic loading on the reinforced concrete slab is evaluated in order to estimate the impact resistance of reinforced concrete under low velocity impact loading. The experimental study is performed on M40 ( f c ′ = 48 MPa ) concrete slab specimen of size (1200 × 1200 × 50) mm reinforced with 6∅ mm Fe500 bars using pendulum drop weight (60 kg) impacting the center of specimen at a drop height of 370 mm. The impact velocity is calculated using open-source software as 2.7 m/s. The experimental study is evaluated for the impact force, crack pattern and the failure mode of the specimen. The peak force was observed as 36 kN from the experiment. The finite element analysis is performed using concrete damage plasticity (CDP) model available in ABAQUS to validate the model incorporating strain rate effects to accurately predict the behavior under dynamic loading. The constitutive model incorporating strain rate effects successfully predicted the behavior under impact loading and was quite beneficial contrary to the tedious experimental procedures. Overall, the results thus obtained from the finite element analysis found to be closely matching with the experimental results.