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A Research on Multi-disciplinary Optimization of the Vehicle Hood at Early Design Phase
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 14, 2020 by SAE International in United States
Vehicle hood design is a typical multi-disciplinary task. It has to meet the demands of different attributes like safety, dynamics, statics, NVH (Noise, Vibration, Harshness). Multi-disciplinary optimization (MDO) of vehicle hood at conceptual design phase is an efficient way to support right design decision and avoid late-phase design changes. However, due to lacking of CAD models, it is difficult to realize MDO at conceptual design phase. In this research, a new method of design and optimization at conceptual design phase is proposed to improve the design efficiency. Firstly, a parametric concept hood model is first built to optimize the structure size, shape and topography. Secondly, an integration automatic platform is developed to integrate CAD/CAE software to call simulation queen, undertake sensitivity analysis and find optimum result. Besides, a multi-disciplinary design example of vehicle hood is given as a test of the proposed methodology in details. The results show that this method reduce weight by 10.1%, improve pedestrian protection performance score from 7.35 to 7.65 according to the China New Car Assessment Program(C-NCAP).