TY - JFULL AU - Chang S. Woo and Hyun S. Park and Wan D. Kim PY - 2013/5/ TI - The Effect of Maximum Strain on Fatigue Life Prediction for Natural Rubber Material T2 - International Journal of Mechanical and Mechatronics Engineering SP - 620 EP - 626 VL - 7 SN - 1307-6892 UR - https://publications.waset.org/pdf/9512 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 76, 2013 N2 - Fatigue life prediction and evaluation are the key technologies to assure the safety and reliability of automotive rubber components. The objective of this study is to develop the fatigue analysis process for vulcanized rubber components, which is applicable to predict fatigue life at initial product design step. Fatigue life prediction methodology of vulcanized natural rubber was proposed by incorporating the finite element analysis and fatigue damage parameter of maximum strain appearing at the critical location determined from fatigue test. In order to develop an appropriate fatigue damage parameter of the rubber material, a series of displacement controlled fatigue test was conducted using threedimensional dumbbell specimen with different levels of mean displacement. It was shown that the maximum strain was a proper damage parameter, taking the mean displacement effects into account. Nonlinear finite element analyses of three-dimensional dumbbell specimens were performed based on a hyper-elastic material model determined from the uni-axial tension, equi-biaxial tension and planar test. Fatigue analysis procedure employed in this study could be used approximately for the fatigue design. ER -