The challenge
As part of the GPE L18 project, a battery intended for railway use must meet stringent mechanical resistance requirements, particularly in the face of shock, vibration and static loads. The aim of this study is to validate the battery’s behavior according to the applicable standards, ensuring that it can withstand these stresses without compromising its durability or integrity. Critical areas, such as screws and welds, must also be examined to ensure that they can withstand the loads imposed by these tests.
The solution
The analysis was carried out using finite element modeling, taking into account various static (lifting, acceleration) and dynamic (shock, vibration) load cases. The results obtained showed that the battery met the requirements of the strength tests, with stresses well below the material’s breaking limits. Particular attention was paid to the screws, some of which showed slippage under certain loads, but with sufficient margins to guarantee their integrity
In addition, the welds were validated for fatigue tests. In conclusion, the battery has been validated for all required tests, and no major modifications are required to its current design.
