Numerical simulation and assessment of self-induced tensile stress in steel ring restrained concrete specimens

Title: Numerical simulation and assessment of self-induced tensile stress in steel ring restrained concrete specimens
Author(s): Xinwei Ma, R. Doug Hooton
Paper category : conference
Book title: International RILEM Conference on Volume Changes of Hardening Concrete: Testing and Mitigation
Editor(s): O. M. Jensen, P. Lura, K. Kovler
Print-ISBN: 2-35158-004-4
e-ISBN: 2351580052
Publisher: RILEM Publications SARL
Publication year: 2006
Pages: 157 - 164
Total Pages: 8
Nb references: 8
Language: English

Abstract: A ring shaped set-up is commonly used to predict cracking potential and quantify the restrained shrinkage behavior of concrete. A steel and concrete composite ring constitutes a complicated counterbalance system. For a better understanding of the strains and stresses, numerical simulation was conducted by using ANSYS under the assumption of absolute bond between the steel and concrete. The results show that the stresses and strains in such concrete and steel rings are uneven; the curves of strains and stresses change gradually around the interface. To ease numerical computation, the mechanical system was simplified under the assumptions of synchronous deformation and uniform strains and stresses. The results of the numerical simulation and simplified stress calculation can match almost perfectly. It means that the simplified mechanical model can be used in stress and visco-elastic behaviour quantification.

Online publication: 2006-07-30
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2351580052.017