TY - GEN
T1 - Ballistic and material tests and simulations on ultra-high performance concrete
AU - Chocron, Sidney
AU - Carpenter, Alexander
AU - Scott, Nikki
AU - Spector, Oren
AU - Malka-Markovitz, Alon
AU - Lovinger, Zev
AU - Havazelet, Doron
N1 - Publisher Copyright:
© The Society for Experimental Mechanics, Inc. 2019.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Ultra-high performance concretes (UHPC), meaning concretes with compressive strengths above 150 MPa (B-150), introduce improved properties such as stiffness, compressive strength, and post-failure compliance as compared to standard concretes. Advantages are shown in standard applications of construction, yet, a large potential exists in applications of protective structures to withstand impulsive loadings of blast or direct impact. In this work an UHPC with a compression strength of 200 MPa was used to test and develop a material model to enable predictions for impact and penetration. The material was first tested to characterize the material behavior under quasistatic loading in torsion, compression and triaxial compression, up to confinement pressures of 500 MPa. Moreover, the UHPC was characterized under dynamic loading, using a Kolsky bar (Split Hopkinson Pressure Bar). Based on these lab-scale tests, a Johnson-Holmquist material model was calibrated for the numerical simulations. Finally, ballistic tests were performed with two projectile geometries, using two configurations: a standalone UHPC panel to obtain the ballistic limit, and depth of penetration (DOP) measurements, with aluminum backing, to better relate to the concrete strength during penetration conditions. Preliminary ballistic computations with the UHPC model, calibrated from the lab-scale tests for LS-DYNA, provided good predictions when compared to most of the tests.
AB - Ultra-high performance concretes (UHPC), meaning concretes with compressive strengths above 150 MPa (B-150), introduce improved properties such as stiffness, compressive strength, and post-failure compliance as compared to standard concretes. Advantages are shown in standard applications of construction, yet, a large potential exists in applications of protective structures to withstand impulsive loadings of blast or direct impact. In this work an UHPC with a compression strength of 200 MPa was used to test and develop a material model to enable predictions for impact and penetration. The material was first tested to characterize the material behavior under quasistatic loading in torsion, compression and triaxial compression, up to confinement pressures of 500 MPa. Moreover, the UHPC was characterized under dynamic loading, using a Kolsky bar (Split Hopkinson Pressure Bar). Based on these lab-scale tests, a Johnson-Holmquist material model was calibrated for the numerical simulations. Finally, ballistic tests were performed with two projectile geometries, using two configurations: a standalone UHPC panel to obtain the ballistic limit, and depth of penetration (DOP) measurements, with aluminum backing, to better relate to the concrete strength during penetration conditions. Preliminary ballistic computations with the UHPC model, calibrated from the lab-scale tests for LS-DYNA, provided good predictions when compared to most of the tests.
KW - Ballistic impact
KW - Computer simulations
KW - High strain-rate material properties
KW - Ultra-high performance concrete
UR - http://www.scopus.com/inward/record.url?scp=85061276692&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-95089-1_34
DO - 10.1007/978-3-319-95089-1_34
M3 - Conference contribution
AN - SCOPUS:85061276692
SN - 9783319950884
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 189
EP - 194
BT - Dynamic Behavior of Materials, Volume 1 - Proceedings of the 2018 Annual Conference on Experimental and Applied Mechanics
A2 - Kimberley, Jamie
A2 - Lamberson, Leslie Elise
A2 - Mates, Steven
PB - Springer Science and Business Media, LLC
T2 - SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2018
Y2 - 4 June 2018 through 7 June 2018
ER -