Rubber fatigue analysis

In order to accurately model the fatigue behavior of rubber, fatigue analysis methods must account for various effects observed for rubber during constant amplitude testing. Effects associated with load level, 7 -ratio (ratio of minimum to maximum loading level), and crack closure are presented in this section. 

Mars WV, Fatemi A (2002) A literature survey on fatigue analysis approaches for rubber. Int J Fatigue 24(9) 949-961... 

Mars, W.V. et al.. Fatigue life analysis of an exhaust mount, in Constitutive Models for Rubber IV, Austrell, K., Ed., Swets Zeiflinger, The Netherlands, 2005, 23. 

Mars, W.V. and Fatemi, A., Analysis of fatigue life under complex loading revisiting Cadwell, Merill, Sloman, and Yost, to be published in Rubber Chem. Tech. 

Figure 5 shows linear regression analysis of the ITFT result. As it can be seen obviously, regressions determine fatigue fanction for the asphalt mixtures. In figure 9 is shown that reinforced specimen s slope is more than nomeinforced specimens. Away from waste rubber reduction strain in reinforced specimens regression equation for reinforced specimen is... 

Stress analysis of failures in the form of cracks in cord rubber composites as a result of fatigue has been carried out which is said to be of help in estimating the severity of local failures (35). 

Stress analysis of failures in the form of cracks due to fatigue of cord-rubber composites was carried out using micromechanical 2D and 3D finite element analysis. The von Mises-Tresca stresses were computed from the results of finite element analysis and compared. Results show that crack type, loading and crack size have a strong effect on the values of the von Mises-Tresca stress. Use of the results of the von Mises-Tresca stress should help in estimating the severity of local failures in cord-rubber composites, it is proposed. 12 refs. 

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