TY - GEN
T1 - Numerical modelling of macro synthetic fiber reinforced concrete sleepers under static and impact loading
AU - Kahagala Hewage, Dayani
AU - Camille, Christophe
AU - Mirza, Olivia
AU - Clarke, T.
PY - 2022
Y1 - 2022
N2 - ![CDATA[The structural optimization of innovative materials requires reliable numerical modelling, which can predict the structural behavior of the respective adaptation under possible scenarios. This paper presents the numerical modelling of macro synthetic fiber reinforced concrete (MSFRC) in railway sleeper applications. MSFRC is well known to improve post-peak flexural strength and toughness owing to the crack-bridging mechanism of fibers. Even though the fibers act individually along the crack interface, MSFRC depicts tension hardening as a material. Therefore, this paper highlights the integration of fiber-concrete composite action as a homogenous material towards efficient modelling of MSFRC in terms of computational resources required. The concrete damage plasticity model (CDP) being widely used to simulate the plain concrete behavior, the adaptability of CDP in the numerical analysis of MSFRC was investigated using the experimental data. Since the railway sleeper is subjected to impacts caused by wheel-rail irregularities, the accountability of the CDP parameters under both static and low-velocity impacts was also evaluated. Correspondingly, the modified CDP parameters reasonably represented the static and impact capacity, crack and damage evolution, and structural stiffness of MSFRC sleepers.]]
AB - ![CDATA[The structural optimization of innovative materials requires reliable numerical modelling, which can predict the structural behavior of the respective adaptation under possible scenarios. This paper presents the numerical modelling of macro synthetic fiber reinforced concrete (MSFRC) in railway sleeper applications. MSFRC is well known to improve post-peak flexural strength and toughness owing to the crack-bridging mechanism of fibers. Even though the fibers act individually along the crack interface, MSFRC depicts tension hardening as a material. Therefore, this paper highlights the integration of fiber-concrete composite action as a homogenous material towards efficient modelling of MSFRC in terms of computational resources required. The concrete damage plasticity model (CDP) being widely used to simulate the plain concrete behavior, the adaptability of CDP in the numerical analysis of MSFRC was investigated using the experimental data. Since the railway sleeper is subjected to impacts caused by wheel-rail irregularities, the accountability of the CDP parameters under both static and low-velocity impacts was also evaluated. Correspondingly, the modified CDP parameters reasonably represented the static and impact capacity, crack and damage evolution, and structural stiffness of MSFRC sleepers.]]
UR - https://hdl.handle.net/1959.7/uws:73919
U2 - 10.14455/ISEC.2022.9(2).STR-24
DO - 10.14455/ISEC.2022.9(2).STR-24
M3 - Conference Paper
SP - STR-24-1-STR-24-6
BT - Achieving Technical Excellence with Data Analytics in Materials, Structural Engineering and Construction: Proceedings of the Sixth Australasia and South-East Asia Structural Engineering and Construction Conference, Sydney, Australia, November 28 - December 2, 2022. Volume 9, Issue 2: Proceedings of International Structural Engineering and Construction
PB - ISEC Press
T2 - Australasia and South-East Asia Structural Engineering and Construction Conference
Y2 - 28 November 2022
ER -