Virtual Simulation Test of on-board Electronic Equipment under Mechanical Environment

Abstract

In order to save the mechanical environment testing cost of the high-speed EMU (Electric Multiple Unit) on-board electronic equipment and shorten the developing cycle, the research on mechanical environment testing of on-board electronic equipment was carried out by using the numerical simulation analysis method. The virtual simulation test platform for on-board electronic equipment was constructed, and the virtual simulation test under the test conditions such as natural frequency, sinusoidal vibration, semi sinusoidal impact and random vibration of a on-board electronic product was completed. The analysis results show that the first natural frequency of the on-board electronic equipment is greater than the excitation frequency. The safety margin is greater than 10 under the sine vibration test conditions, and the minimum safety margin(1.2) is at the underfoot under the impact load, and it is suggested to improve the underfoot, and maximum response acceleration(16.1g)is at relay under impact load, This value can be used as the basis for selecting relay. The minimum safety margin (2.4) is at the frame under random loading. The virtual test platform for the on-board electronic equipment constructed in this paper can be used as a reference for design and assessment of the on-board electronic equipment.