FRCM-Confined Concrete: Influence of Cross-Section Geometry on Cyclic Stress–Strain Behavior

Author(s):  
Klajdi Toska ◽  
Flora Faleschini
1999 ◽  
Vol 125 (6) ◽  
pp. 605-612 ◽  
Author(s):  
Mario E. Rodriguez ◽  
Juan C. Botero ◽  
Jaime Villa

2007 ◽  
Vol 55 (16) ◽  
pp. 5359-5368 ◽  
Author(s):  
R. Lillbacka ◽  
G. Chai ◽  
M. Ekh ◽  
P. Liu ◽  
E. Johnson ◽  
...  

1989 ◽  
Vol 17 (2) ◽  
pp. 100-108
Author(s):  
O. B. Tretyakov ◽  
S. L. Sokolov

Abstract Some criteria are presented for evaluating the various tire design theories that are based on the equilibrium shape of the sidewall and on the rolling contour of a tire (RCOT). Tire failure types and the mathematical models by which they can be predicted by modern theories of rubber/cord fatigue are also described. A tire design theory based on stress-strain optimization of its elements is proposed as is a hierarchic system of complicated tire models for calculation of stress-strain cycles. Approaches are suggested for estimating fatigue strength of rubber-cord composites. Influence of the cross-section geometry and of the inner structure of the tire on stress-strain cycles in the belt and bead of radial tires is investigated. Results obtained with the different design theories are compared.


Author(s):  
P. Dong ◽  
Z. Cao ◽  
J. K. Hong

In the context of fatigue evaluation in the low-cycle regime, the use of the master S-N curve in conjunction with elastic FE-based structural stress calculations is presented. An elastic pseudo structural stress estimation is introduced by assuming that Neuber’s rule applies in relating structural stress and strain concentration at a weld to the material’s cyclic stress-strain behavior. With the pseudo structural stress procedure, recent sources of recent full scale test data on pipe and vessel welds were analyzed as a validation of the proposed procedure. The estimated fatigue lives versus actual test lives show a reasonable agreement. Finally, the feasibility of using monotonic stress-strain curves as a first approximation is also examined for applications when cyclic stress-strain curve may not be readily found. The analysis results indicate that the life estimations using monotonic stress-strain curves are reasonable, with the recent test data falling within mean ± 2σ, where σ represents the standard deviation of the master S-N curve.


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