Based on Linear Cumulative Damage Thrust Rod Fatigue Life Prediction

In order to predict the fatigue life of heavy-duty commercial vehicles thrust rod, dumbbell specimens made of rubber material and uniaxial tensile fatigue test. According to the specimen measured data, based on linear cumulative fatigue damage rule to the maximum principal strain injury parameters established rubber uniaxial fatigue life prediction model. In the longitudinal tension and compression loading, fatigue life V rod were predicted, and by the uniaxial fatigue test verification, the results show that the maximum principal strain prediction model, the maximum error is less than 10% predicted better results. Show that the method based on fatigue cumulative damage, establish spherical hinge rubber life model, can predict the fatigue life of the thrust rod. The method used in this paper for the design and improvement of the thrust rod can help.