Finite Element Analysis on the Blast Resistant Performance of Multibarrel Tube-Confined Concrete Column in Different Cross-Sections

Abstract:

Based on the finite element analysis software ANSYS/LS-DYNA, this paper numerically analyzed the dynamic performance of MTCCCs with different cross sections under blast load, followed by the study and comparison on the differences of the detonation wave propagation and failure modes between the columns in circular cross section and square cross section. The results show: The blast resistant performance of the circular component is more superior than the square component for its better aerodynamic shape that can greatly reduce the impact of the detonation wave on the column; The main difference of the failure modes between the circular and square cross-sectional components under blast load lies in the different failure mode of the outer steel tube. The simulation results in this paper can provide some references for the blast resisting design of MTCCCs.

• Periodical: Advanced Materials Research (Volume 721)
• Pages: 545-550
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.721.545
• Online since: July 2013
• Authors: Sai Wu, Jun Hai Zhao, Er Gang Xiong
• Keywords: Blast Load, Blast Resistant Performance, Cross Section, Multibarrel Tube-Confined Concrete Column (MTCCC)

References

[1] H.O. Zhao, LS-DYNA Dynamic Analysis Guide, Weapons Industry Press, Beijing, 2003.

[2] J. Z. Bai, LS-DYNA 3D Theoretical Basis and Case Analysis, Science Press, 2006.

[3] D.Y. Shi, Y.C. Li, S.M. Zhang, Dynamic Analysis Based on the ANSYS/LS-DYNA8.1, Qing hua University Press, 2009.

[4] LS-DYNA. Keyword user's manual.Version 970. California: Livemore Software Technology Corporation, 2006.

[5] G.R. Johnson, T.J. Holmquist, W.H. Cook. A constitutive model for concrete subjected to large strains, high strain rates, and high temperature. Proceeding of the Seventh International Symposium on Ballistics, 1983: 541-547.

[6] F.G. Zhang, E.Z. Li, A computational model for concrete subjected to large strains, high strain rates, and high pressures, J. Explosion and Impact. 22(2002)198-202.

[7] S.S. Hu, D.R. Wang, Dynamic constitutive relation of concrete under impact, J. Explosion and Impact. 22(2002)242-246.

[8] C.M. Hu, H.L. He, S.S. Hu, A study on dynamic mechancial behaviors of 45 steel, J. Explosion and Impact. 3(2003)188-199.

[9] G. Chen, Z.F. Chen, J.L. Tao, Investigation and validation on plastic constitutive parameters of 45 steel, J. Explosion and Impact. 25(2005)451-456.