TY - JOUR
T1 - A novel analytical framework for assessing the impact response of SFRC beam
AU - Bakhshi, Mohammad
AU - Barros, Joaquim A.O.
AU - Rezazadeh, Mohammadali
AU - Valente, Isabel B.
AU - Ramezansefat, Honeyeh
N1 - Funding information: The authors acknowledge the support provided by FCT through the project “FemWebAI - Integrated approach for reliable and advanced analysis and design of sustainable construction systems in fiber reinforced concrete”, with reference PTDC/ECI-EST/6300/2020. The first author gratefully acknowledges the financial support of FCT for the Ph.D. Grant SFRH/BD/149246/2019.
PY - 2023/12/1
Y1 - 2023/12/1
N2 - This paper presents a novel model for predicting the impact response of steel fiber reinforced concrete (SFRC) beams. The model utilizes the principles of energy conservation and impulse-momentum theorem to calculate the maximum reaction force and peak impact force. A tensile behavior model for simulating the concrete behavior is proposed considering the effect of volume fraction of steel fibers and the effect of strain rate on the concrete properties. Additionally, the conventional beam theory, along with a cross-section-layered approach, is used to express the total beam's reaction forces vs deflection relationship. Afterwards, the model calculates the maximum midspan deflection of SFRC beams subjected to impact loading by applying the principle of conservation of energy and considering the effect of strain rate. The proposed model is compared with 121 impact tests, and the results show that the model can estimate the maximum reaction force of SFRC beams with acceptable accuracy.
AB - This paper presents a novel model for predicting the impact response of steel fiber reinforced concrete (SFRC) beams. The model utilizes the principles of energy conservation and impulse-momentum theorem to calculate the maximum reaction force and peak impact force. A tensile behavior model for simulating the concrete behavior is proposed considering the effect of volume fraction of steel fibers and the effect of strain rate on the concrete properties. Additionally, the conventional beam theory, along with a cross-section-layered approach, is used to express the total beam's reaction forces vs deflection relationship. Afterwards, the model calculates the maximum midspan deflection of SFRC beams subjected to impact loading by applying the principle of conservation of energy and considering the effect of strain rate. The proposed model is compared with 121 impact tests, and the results show that the model can estimate the maximum reaction force of SFRC beams with acceptable accuracy.
KW - Analytical model
KW - Concrete beam
KW - Drop weight test
KW - Energy balance
KW - Steel fiber reinforced concrete
KW - Strain rate
UR - http://www.scopus.com/inward/record.url?scp=85170407042&partnerID=8YFLogxK
U2 - 10.1016/j.ijimpeng.2023.104768
DO - 10.1016/j.ijimpeng.2023.104768
M3 - Article
AN - SCOPUS:85170407042
SN - 0734-743X
VL - 182
JO - International Journal of Impact Engineering
JF - International Journal of Impact Engineering
M1 - 104768
ER -
