Abstract:
This paper presents a comprehensive methodology for the development and validation of a parametric finite element model of a sports utility vehicle (SUV), emphasizing advanced shape optimization and parametric modeling techniques. Utilizing state‐of‐the‐art pre‐ and post‐processing tools—TrueGrid for mesh generation, LS-DYNA for analysis, and LS-POST for visualization—the model is constructed with an arbitrarily defined element size and distribution that can be tailored to specific crash scenarios. Through a parameterization scheme, the mesh density is locally refined in regions of high interest (such as impact zones) while remaining coarser elsewhere, thus optimizing the computational efficiency and accuracy of the simulation. The model’s flexibility allows for rapid adjustment of geometric and material parameters, enabling targeted shape optimization and design refinement for various crash configurations, including frontal, side, and rear impacts. Detailed verification against experimental crash test data demonstrates strong correlation in structural deformations and energy absorption characteristics, validating the model’s utility in predicting crashworthiness. Furthermore, the integration of parametric input definitions paves the way for coupling with optimization tools—such as LS-OPT—to systematically explore design variations and improve overall vehicle safety through enhanced structural performance and shape optimization.
