Analysis of the Tensile Cracking of Rock-Concrete Materials Based on Elasto-Viscoplastic Model

Abstract:

Suppose there is time course during the cracking and deforming process, the tensile cracking of rock-concrete materials was analyzed by means of elasto-viscoplastic model and its calculation steps were illustrated as well in this paper. The expression of function Φ in elasto-viscoplastic theory was studied; what’s more, it was comparatively analyzed the tensile cracking of rock-concrete materials by elasto-viscoplastic model and the maximum tensile stress criterion respectively. There are some differences comparing with the study of plastic yield by elasto-viscoplastic model, when analyzing the tensile cracking of rock-concrete materials on the basis of elasto-viscoplastic model, the function Φ should be the stress or stress formula of the direction where the principal stress firstly reaches the tensile strength; it is proved by the example analysis that it is feasible to study the tensile cracking of rock-concrete materials by elasto-viscoplastic model and there is no iteration stability issues.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 4569-4575
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.4569
• Online since: May 2011
• Authors: Yao Ying Huang, Hong Zheng
• Keywords: Elasto-Viscoplastic Model, Rock-Concrete Material, Tensile Cracking

References

[1] Owen D.R.J. Hinton E.. Finite elements in plasticity: theory and practice. Swansea (U.K.): Pineridge Press Ltd., (1980)

[2] Bofang Zhu. the Finite Element Method Theory and Applications [M] Beijing: China WaterPower Press, 2000(in Chinese)

[3] Shenghong Chen. Calculation Rock Mechanics and Engineering [M] Beijing: China WaterPower Press,2006(in Chinese)

[4] Weiyuan Zhou, Qian Yang. Numerical Calculation Methods for Rock Mechanics [M] Beijing: China cepp, 2005 (in Chinese)

[5] Cormeau I. Numerical Stability in Qasistatic Elasto-Visco-Plasticity [J]. Int .J,.Num. Meth. Eng., 1975 (9):109-127

DOI: 10.1002/nme.1620090110

[6] Jialong Wu. Elasticity [M] Beijing: Higher Education Press 2001(in Chinese)

[7] J.C. Simo, T.J.R. Hughes. Calculational Inelasticity [M] Springer (1998)