Analysis of the Tensile Cracking of Rock-Concrete Materials Based on Elasto-Viscoplastic Model
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.
Chaohe Chen, Yong Huang and Guangfan Li
Y. Y. Huang and H. Zheng, "Analysis of the Tensile Cracking of Rock-Concrete Materials Based on Elasto-Viscoplastic Model", Advanced Materials Research, Vols. 243-249, pp. 4569-4575, 2011