Extreme environment such as high temperature seriously threatens the normal operation of special vehicles, and the key components of vehicles are sensitive to environmental changes. In order to study the thermal environment evolution of key parts of special vehicles under fuel tank Fire, Fire Dynamics Simulator (FDS) is adopted to build a vehicle model, and the fuel is set as -10 diesel. The flame characteristics, combustion propagation and temperature changes of the key parts of the vehicle in different stages and different fuel tank positions of the simplified vehicle model were calculated, and the application requirements of special vehicles in special scenarios were verified.
Torsion beam is a kind of automobile suspension system. At present, bench experiment is a widely used method to predict the fatigue torsion life of torsion beam in the research and development process of torsion beam, so the accuracy of experiment results is particularly important. According to the actual load condition of torsion beam, this paper builds the corresponding experiment bench, and analyzes the key technologies in the process of bench experiment and adjustment. The experiment results show that the application of the key technology can restore the entry point, force direction and load of the vehicle in the real driving process.
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