A study of earthquake performance of the power supply for telecommunications systems by computer simulation and experiment

The Great Hanshin Earthquake of 1995 demonstrated that telecommunications systems are very important in rescue efforts and for information transfer. Since the power supply is a key device of telecommunications equipment, its performance must have a degree of seismic resistance. For the investigation of the seismic resistance of the power supply, a simulation was performed for the natural frequency and the response acceleration by means of the finite element method. A power supply was manufactured and subjected to a vibration test, and the experimental results were compared with the simulation results. The error was very small; less than 2.0%. Close agreement was also obtained between simulation and experimental results employing an actual earthquake waveform