Technical Paper
A Study on the Development of Concept Models Using Higher-Order Beams
2024-04-09
2024-01-2227
In the early stages of vehicle development, it is critical to establish performance goals for the major systems necessary for NVH. The fundamental modes of BIW and chassis frames are typically assessed using FE models, discretized using 3D shell elements. However, the use of the 3D shell-based FE method is problematic in terms of fast analysis and quick decision-making, especially during the concept phase of a vehicle design because it takes much time and effort for detailed modeling. To overcome these weaknesses, a 1D method based on beam elements has been extensively studied over several decades, but it was not successful because of low analysis accuracy for thin-walled beam structures. This investigation proposes a 1D method based on thin-walled beam theory for fast analysis of vehicle structures with comparable accuracy to 3D shell models.