Numerical simulation of blasting damage in concrete using a coupled SPH-FEM algorithm

WANG Zhiliang; BI Chengcheng; LI Hongru

doi:10.11883/bzycj-2017-0209

Volume 38 Issue 6

Sep. 2018

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WANG Zhiliang, BI Chengcheng, LI Hongru. Numerical simulation of blasting damage in concrete using a coupled SPH-FEM algorithm[J]. Explosion And Shock Waves, 2018, 38(6): 1419-1428. doi: 10.11883/bzycj-2017-0209

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WANG Zhiliang, BI Chengcheng, LI Hongru. Numerical simulation of blasting damage in concrete using a coupled SPH-FEM algorithm[J]. Explosion And Shock Waves, 2018, 38(6): 1419-1428. doi: 10.11883/bzycj-2017-0209

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Numerical simulation of blasting damage in concrete using a coupled SPH-FEM algorithm

doi: 10.11883/bzycj-2017-0209

School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, Anhui, China

Received Date: 2017-06-16
Rev Recd Date: 2017-09-23
Publish Date: 2018-11-25

Abstract

Abstract

To improve the calculation efficiency and describe the failure process of concrete under blast loading, a coupled SPH-FEM algorithm was used to simulate blast crater of concrete in this study. First, based on the partial Holmquist-Johnson-Cook(HJC) constitutive parameters of C30 concrete, and the remaining parameters determined via theoretical derivation, the numerical calculation was performed and the results were then compared with the measured data by taking the parameters into the numerical model. The sensitivities of 21 parameters for the HJC model were finally analyzed with peak pressure and peak acceleration. The results show that the coupled SPH-FEM algorithm can simulate the whole process of blast crater under the blast loading, and it may accurately deal with the SPH boundary problem. Based on the parameters of C30 concrete HJC model, the calculated results of the coupled algorithm agree well with the experimental ones, which demonstrates the rationality of the determining method for HJC constitutive parameters. In addition, the parameters have different sensitivities to the results of blast problem, and these parameters significantly influencing the peak pressure and peak acceleration should be paid enough attention in the process of its determination.
- concrete,
- blasting damage,
- coupled SPH-FEM algorithm,
- HJC constitutive model,
- parameter sensitivity

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References(24)

References

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