Study on Fatigue Strength of Small Maglev Vehicle

With the development of domestic and foreign economy, the development of national economy is unprecedented high, in order to meet the needs of the people, it is imperative to develop a new means of transportation. Therefore, in the world, many countries have begun to study and develop the maglev train, and have made remarkable achievements. With the continuous improvement of transportation speed, the structural strength of maglev train body also puts forward higher requirements. As the research object, the finite element model of car body, according to the EN12663, determine three fatigue conditions, based on the nominal stress method of the car body under fatigue welding structure, the results of 2 cumulative damage value is 0.241. After the structural improvement, the cumulative damage ratio of the fatigue weak parts under all working conditions is less than 1, meet the requirement of fatigue strength.