The Lightening Optimization For 200km/h AC Locomotive Body

To lighten the body of locomotive can decrease moving resistance, reduce traction power, increase speed, improve environmental protection, lower axle load, reduce vibration while running along the roadbed, reduce the noise between wheel and rail, and ultimately help to improve the functioning Train Quality. In the past two years, the booming of China's high-speed railway development calls for higher and higher request for lightening locomotive.With the increase of locomotives' speed, power and the improvement of modernization, there comes the result of increasing the weight of electrical equipment, which requires significantly lightening the weight of mechanical parts. The locomotive body as a major component which needs to be lightened, its design of weight loss quantify has become a key issue, and is costing an increasing concern.Taking the project of 200 km/h AC locomotive design from Datong Locomotive Works as the background, this paper build the finite element modeling for locomotive bearing structure and analysis the static strength with the application of ANSYS, which is a finite element modeling and analysis software. In addition, on the basis of full research on the status quo of locomotives' lightweight at home and abroad, this paper develops a combinatorial optimization strategy, which combines Latin Hypercubes test design and the method of feasible direction. This paper also applies this strategy to the lightweight optimization of the weight carrying structure of locomotive body. The results show that compared with traditional methods, this strategy has many advantages, such as high efficiency and accuracy, while it is used to solve lightweight problems with similar nonlinear large and complex structure. Its application has a broad prospect.