NUMERICAL SIMULATION OF STRESS WAVE PROPAGATION IN SAP CONCRETE
DOI:
https://doi.org/10.14311/CEJ.2018.02.0021Keywords:
SAP concrete, Stress wave propagation, Strain-rate effect, SHPB test, Attenuation and dispersion effectAbstract
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.
Downloads
References
Wang F.Z., Yang J., Cheng H., Wu J., Liang X.Y., 2015. Study on the mechanism of desorption behavior of saturated SAP in concrete. ACI matererials journal, vol. 112: 463-470
Yang J., Wang F.Z., Liu Y.P., 2015. Comparison of ordinary pores with internal cured pores produced by superabsorbent polymers. Advanced materials research, 1129: 315-322
Wang F.Z., Yang J., Hu S.G., Li X.P., Cheng H., 2016. Influence of superabsorbent polymers on the surrounding cement paste. Cement and concrete research, vol. 81: 112-121
Wang L., Wang Y.G., 2005. The important role of stress waves in the study on dynamic constitutive behavior of materials by SHPB. Explosion and shock waves, vol. 25: 17-25
Godin O.A., Chapman D.M., 2001. Dispersion of interface waves in sediments with power-law shear speed profiles. I. Exact and approximate analytical results. Journal of the Acoustical society of america, vol. 110:1890-907
Chapman D.M.F., Godin O.A., 2001. Dispersion of interface waves in sediments with power-law shear speed profiles. II. Experimental observations and seismo-acoustic inversions. Journal of the acoustical society of america,vol. 110:1908-16
Murty G.S., 1975. A theoretical model for the attenuation and dispersion of stoneley waves at the loosely bonded interface of elastic half spaces. Physics of the earth & planetary interiors, vol. 11: 65-79
Deng Z.P., Cheng H., Wang Z.G., Zhu G.H., Zhong H.S., 2016. Compressive behavior of the cellular concrete utilizing millimeter-size saturated SAP under high strain-rate loading. Construction and building materials, vol. 119: 96-106
Deng Z.P., Cheng H., Zhu G.H., 2015. Dynamic behavior and constitutive model of super absorbent polymer concrete under impact loading. International journal of earth sciences and engineering, vol. 8: 2974-2980
Drucker D.C., Prager W., 1952. Soil mechanics and plastic analysis or limit design. Quarterly of applied mathematics, vol.10: 157-165
Li Q.M., Meng H., 2003. About the dynamic strength enhancement of concrete-like materials in a split Hopkinson pressure bar test . Solids and structures, vol. 40: 343-360
Bischoff P.H., Perry S.H., 1991. Compressive behavior of concrete at high strain rate. Materials and structures, vol. 24: 42-450
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
