Analysis of vibration response characteristics of containers based on computer simulation

For battery transport containers, model processing, seismic and road vibration response analyses were conducted. Modal analysis was carried out to obtain the 1st to 10th order natural frequencies (7.38-105.10 Hz) and combined with the design response spectrum to calculate the total response. The boundary conditions were fixed anchor bolts, with 350 kg point masses added to the supports to simulate battery packs, and the damping coefficient was 2 %. According to the IEEE693 standard, seismic waves were input, and the analysis showed that the maximum stresses of the battery pack bracket and the container body were 158 MPa and 241.8 MPa respectively, both lower than the allowable seismic strength, which could provide a basis for seismic design. For road vibration response, random vibration analysis based on the power spectral density theory was used, with an appropriate frequency range selected and data input with reference to the GB4857.23 standard. The simulation showed that the maximum stresses of the battery pack bracket and the container body were 100 MPa and 106 MPa respectively, both lower than the allowable transportation vibration strength of 118 MPa, which could provide references for structural optimization and improve transportation safety and economy.