Dynamic Simulation Of PW200 And Security Of Freight Transport On Base Of ADAMS

The railway is the main transport method of our country, and is an important role to national economy of our country. With the development of railway technology, high speed and heavy carry become the topic of the modern railway technology. This paper regards equipments as the research object, and regards ADAMS software as the study tool. It mainly studies dynamics of the bullet train's system and the application of the dynamic simulation technology to the security of freight transport.The bullet train has been an important topic to the development of railway technology in our country, and increasing speed has been proceeded successively several times. At the same time, more and more high request of the comfortable index also has been put forward. With the characteristics to the Z pole, the paper does the simulation to bullet train PW200 manufactured by our country. The simulation result indicates that the design of the Z pole meets the demand of the bullet train. On the base of foreign experience, the paper also analysis the effect of the dampers mounted between the car bodies on the horizontal and vertical direction. And the simulation result indicates that the appropriate dampers between the car bodies will increase the comfortable index of the bullet train PW200.For the strategy request of the railway development and the demand to the developments of high-speed railroad, the railroad department determined to build a high-speed railroad between Beijing and Shanghai, and the rails used in the railroad will be 100 meters long. But our country has never transported the rails with 100 meters long in the transport history. The paper uses the dynamic simulation technology to railway freight transport firstly. According to the transport project, the rails transported by common flatcar, the dynamic model is established in the paper, and is analysised from the field of acceleration of the car body, derail factor, rate of wheel load reduction, lateral force between the rail and the wheel, and etc. On the base of simulation result, the paper puts forward the feasibility of the transport project. This will be the leading function to the transport test.Vehicle system dynamics and multi-body dynamics are still placed in the stage of the development, and in the course of the analysis, the researchers usually have some trouble to simulate some parts in the vehicle system, such as the air spring in the passenger car bogie and the wedge of the three-piece truck. At present, the air spring usually is simulated with the coil spring, and the wedge usually is simulated with the friction damper. This usually causes the low accuracy. The paper uses new methods to simulate the parts, the air spring simulated with Krettek air spring model and the wedge simulated with the numerical design of the friction between the planes. What is more, the paper analyzes the dissipative energy on the main plane and the assistant plane. And the simulation result expresses that the simplification model is reasonable.