关键词: 模拟公路运输振动, 电器产品, 加速度谱密度, 随机振动

Abstract: Electrical products need to undergo transportation before being put into use, and vibration during transportation can have a certain impact on the life and reliability of the products. It is necessary to test the resistance to transport vibration of electrical products by means of simulated transport vibration test. Based on relevant standards for transportation vibration, experimental guidelines for conducting simulated transportation vibration tests are provided, and key points related to sample installation, composition of transportation vibration tests, and selection of acceleration density spectra are summarized. Comparative analysis was conducted on the severity of acceleration density spectrum vibration levels in common transportation vibration standards such as GB/T 2423, GB/T 4857, ISTA 3A, ASTM D4169-16, GJB 150, etc. Suggestions were given on how to choose appropriate transportation vibration standards, in order to better conduct simulated road transportation vibration tests for products that need to be transported. The analysis results show that the military standard transportation vibration test level is higher than the civilian standard, and the recommended transportation vibration test level for the civilian GB/T 2423 series standard is also larger; most products can be tested using the GB/T 4857.23 highway general vibration standard spectrum during transportation vibration testing.

Key words: Simulate road transportation vibration, Electrical products, Acceleration spectral density, Random vibration