Influence of the Rise Time and Decay Time of Stress Wave on Spalling Process of Rock-Like Material

Qing Yun Chen; Yu Jun Zuo; Chun An Tang; Shu Cai Li

doi:10.4028/www.scientific.net/KEM.462-463.587

Paper Titles

The Effect of Thermal Prestress on the Deformation of Micromirror Chip Embedded with Through-Silicon Vias
p.563

Seismic Response Evaluation of RC Tower Connected to Short Rigid Buildings
p.569

Strength Properties of Cellulose Nanofiber Green Composites
p.576

A Computational Study of the Overload Characteristic Curves of Projectile Penetrating Concrete
p.582

Influence of the Rise Time and Decay Time of Stress Wave on Spalling Process of Rock-Like Material
p.587

Influence of Heat Treatment on Characteristic Behavior of Co-Based Alloy Hardfacing Coatings Deposited by Plasma Transferred Arc Welding
p.593

Numerical Simulation of Reflective Crack Forming in Semi-Rigid Asphalt Pavement Subjected to Traffic Load
p.599

Large Scale Elasto-Plastic Analysis Using Domain Decomposition Method Optimized for Multi-Core CPU Architecture
p.605

Prediction of Safety Factor for Slope Designed with Various Limit Equilibrium Methods
p.611

HomeKey Engineering MaterialsKey Engineering Materials Vols. 462-463Influence of the Rise Time and Decay Time of...

Influence of the Rise Time and Decay Time of Stress Wave on Spalling Process of Rock-Like Material

Abstract:

Using numerical code RFPA2D (dynamic version), spallation processes of rock-like medium induced by reflection of stress wave with different rise time and decay time are simulated, and based on description and discussion on the failure area in the document [1], the influence of the rise time and decay time of stress wave on spalling process of rock-like material are numerically analyzed and discussed. Results indicate that the comminution zone is affected little by the duration of stress wave regardless of the rise time or decay time, and the fracture zone is affected to a greater extent by the rise time than the decay time, and the spalling zone is affected to some extent by the duration of stress wave regardless of the rise time or decay time, also, the stability of specimen is affected by the duration of stress wave regardless of the rise time or decay time, and the specimen loses stability at a certain decay time earlier than that at the same rise time. Furthermore, the effects of rise time and decay time on the number of failure elements are also investigated. Results show that a shorter rise and decay time increase the number of radial cracks. At longer rise time and decay time, the number of cracks is reduced and the cracks extend longer. In addition, the spalling increases to some extent as the rise time or decay time decreases.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 462-463)

Pages:

587-592

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.462-463.587

Citation:

Cite this paper

Online since:

January 2011

Authors:

Qing Yun Chen, Yu Jun Zuo, Chun An Tang, Shu Cai Li

Keywords:

Heterogeneity, Numerical Simulation, Spallation Process, Time of Stress Wave

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Y.J. Zuo, C.A. Tang, W.C. Zhu and L.C. Li:　 Key Engineering Materials Vol. 353-358(2007), p.256.

Google Scholar

[2] J. Zhao, Y.X. Zhou, A.M. Hefny, J.G. Cai, S.G. Chen, H.B. Li, J.F. Liu, M. Jain, S.T. Foo, and C.C. Seah: Tunnelling and Underground Space Technology Vol. 14 (1999), p.513.

DOI: 10.1016/s0886-7798(00)00013-4

Google Scholar

[3] S.H. Cho, K. Kaneko: International Journal of Rock Mechanics and Mining Sciences Vol. 41 (2004), p.771.

Google Scholar

[4] C.A. Tang, H. Liu, P.K.K. Lee: International Journal of Rock Mechanics and Mining Sciences, Vol. 37(4) (2000), p.555.

Google Scholar

[5] W.C. Zhu, C.A. Tang: International Journal of Rock Mechanics and Mining Sciences, Vol. 43(2) (2006), p.236.

Google Scholar