CAE-based Structural Design And Optimization About The Locomotive Rescuer Vehicle

Railway is an important infrastructure in our country, and it's the transportation artery for our national economy. Accompanied with carrying out of national railway speed-raising strategyand the vigorous development of high-speed railway, the capability and management level of railway transportation has greatly improved. But compared to the further need of the national economy, gaps are still exist. The high speed and the backward technology lead to vehicle's accidents and failures happen easily, which would make transportation interrupt and would diffuse to the network soon and disturb the normal transportation order, even give a bad impact on the social production and railway transportation.The running part is a very important component. Aimed to solve the common problems of running part, this paper develops one type of equipment named Locomotive Rescuer Vehicle. It's light, flexible and widely suitable, and would greatly improve the efficiency of accident treatment; it also could make the labor intensity better and cut the treat cost. When the Locomotive Rescuer Vehicle is used, it performances as the substitute wheel to recover the basic running function of the fault locomotive, then it could be withdrawed from main railway line and ensure the line's unobstructed.The Locomotive Rescuer Vehicle researched in this paper adopted modular design, which makes assemble and disassemble more conveniently. In this paper, it makes a further research to optimal the detailed structure by CAE method. So the vehicle could meet the actual treat needs. The main contents of this paper are as follows:First, combined with the systematic design method and principle and the railway industry standard, complete the preliminary design of the Locomotive Rescuer Vehicle, which has considered the demand of popularity, reliability and stability yet. It innovatively adopt the component named Trigonous eccentric block, which make the vehicle could support different locomotive wheels (990~1250mm) when support span is fixed, through the nine different combination modes of trigonous eccentric block.Second, build up 3-D model of preliminary design in Pro/E to complete the virtual design. Here it strengthens the analysis of the side-frame, and establishes the detailed parameterized model. Then through data interactive technology between Pro/E and CAE, import this model into ANSYS to complete static mechanical analysis. It provides a good support for the feasibility of the preliminary design and lays a good foundation for lighten research on side-frame.Last, the side-frame lighten is the key point of whole vehicle lighten. This paper has used the principle and method of weight-light design to lighten the side-frame, based on the premise of material fixed, and has achieved some good results. At first, aimed to improve the section structure of the frame, re-choose the hot-rolled scalene angle steel; then make optimal design on the ISIGHT platform, which integrate software Pro/E and ANSYS together; After compared two different optimal schemes, the final plan eventually get. In this plan, besides satisfied the demand of strength and rigid, compared to the original design, the side-frame has reduced by 30.28% in weight.