Structural analysis of a marine battery tray
Objective:
Battery-power plays an important role in ships and submarines. Batteries are constantly charged by the generators coupled with the engines and provide constant reliable power. Since the number of batteries is generally large they are placed in arrays in trays. The trays need to be designed to withstand the heavy weight of the batteries and any impact they might experience during operation. A manufacturer needed to perform a finite element static and dynamic analysis for a battery tray for various loading conditions.
Methodology:
The whole structure was idealized using shell, beam and mass elements. Static analysis has been performed for self-weight and mass of the battery. Transient dynamic analysis was carried out to analyze the battery tray for SHOCK/IMPACT. A frequency response analysis was carried out for constant amplitude and acceleration vs. frequency.
Static analysis results were within allowable limits. Stress and displacement values for shock and frequency analysis (for ground excitation and amplitude) were higher along transverse directions.
The tray was qualified for maritime use.
|
Case Studies