Finite Element Analysis And Optimization About Main Frame Of Mine Explosion-Proof Rubber-Tyred Vehicle

Along with our country development of modernization mining industry, people pay more attention to the trackless auxiliary transportation. The system of mine explosion-proof rubber-tyred vehicle is very simple and agile, high efficiency and adaptability to the environment is strong, so,it can completely changed the backward condition of traditional transportation. The main frame of explosion-proof rubber-tyred vehicle is an indispensable important structure of its chassis system.In the process of moving, the main frame of explosion-proof rubber-tyred vehicle is not only to resist the impact from the continuous load caused by uneven roads, but also to resist their own engine and other power effect. Therefore, on the design of the manual car frame, Avoid the low order modal frequency and light weighting of the main frame of explosion-proof rubber-tyred vehicle will play an active role in the whole optimization.The studies of this paper is explosion-proof rubber-tyred vehicle which mainly transport material,long-term traveling on the roughness road and poor road conditions in the the overloaded case.We can know from the customer feedback,the frame often appear fatigue crack such failure conditions during the vehicle’s useful lifetime. In this situation, this paper has performed finite element analysis of the main frame of explosion-proof rubber-tyred vehicle. The main content of the research are as follows:First of all, Set up the finite element model of the frame,To the main frame of explosion-proof rubber-tyred for the bending conditions and bending-torsion conditions of the static mechanics analysis,we can get its stress distribution, find frame failure parts in these working conditions.Secondly, modal analysis of the frame, including the freedom and constraints of modal modal analysis,we can draw the frame natural modal frequencies and mode shapes.Through the frame subjected to road and engine excitation frequency and the natural frequency of the frame, Verify that the vibration performance of the frame and whether resonance occurs.Finally, the use of OptiStruct to optimize analysis of the frame, determine Optimization of design variables and constraints before optimization analysis, Further in-depth study how to improve the low-order modal frequencies and lightweight frame. Ensure the lightweight of the frame quality in the context of the right frame strength, stiffness and low-order modal frequency of the frame,at the same time.The whole chapter make a more systematic study to the frame of mine explosion-proof rubber-tyred vehicle,about the Optimize overall structure. Optimization analysis results will play an important reference value of the further frame design.