NUMERICAL SIMULATION OF STRESS WAVE PROPAGATION IN SAP CONCRETE

Authors

  • Zhenqun Sang Army Logistics University of PLA, Chongqing, 401311, China
  • Zhiping Deng Technology Brigade of Aerospace Engineering, Beijing, 100192, China
  • Jianglin Xi Army Engineering University of PLA, Nanjing, 210007, China
  • Huibin Yao Communication Institute for NICOs, Army Engineering University of PLA, Chongqing, 400035, China
  • Jiang Wu Communication Institute for NICOs, Army Engineering University of PLA, Chongqing, 400035, China

DOI:

https://doi.org/10.14311/CEJ.2018.02.0021

Keywords:

SAP concrete, Stress wave propagation, Strain-rate effect, SHPB test, Attenuation and dispersion effect

Abstract

The SAP (Super Absorbent Polymers) concrete is a new kind of concrete materials with uniformly distributed spherical pores with diameter of millimetre-size. The study on propagation characteristics of SAP concrete is important to give a full comprehending of its dynamic mechanical properties.Based on the ABAQUS platform, the numerical model to simulate the propagation of stress wave in SAP concrete was established by introducing the function of dynamic compressive strength increment DIF-fc,r caused by strain-rate effect of the material itself and strain rate into the expanded Drucker-Prager model. Totally six kinds of triangle stress wave have been investigated, and the transmitted stress wave for each triangle incident stress wave through different pressure bars has been analysed. Based on the numerical calculation, the laws of attenuation and dispersion effect on stress waves in the SAP concrete with evenly distributed millimetre-size spherical pores inside have been analysed.

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References

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Published

2018-07-31

How to Cite

Sang, Z., Deng, Z., Xi, J., Yao, H., & Wu, J. (2018). NUMERICAL SIMULATION OF STRESS WAVE PROPAGATION IN SAP CONCRETE. Stavební Obzor - Civil Engineering Journal, 27(2). https://doi.org/10.14311/CEJ.2018.02.0021

Issue

Vol. 27 No. 2 (2018)

Section

Articles

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