关键词: 皮卡；车门；内板模态；优化方法；应变能；有限元模型；模态优化

Abstract: Aiming at the problem that the front door modal of pickup truck is not up to standard, finite element method combined with strain energy (ESE) is used to carry out modal optimization. Through simulation and real vehicle verification, the proposed optimization scheme can meet the requirements of the enterprise on the premise of no weight gain. It shows that the optimization method based on ESE is more efficient and effective than the traditional optimization method based on engineer's experience, which provides a certain reference for similar engineering optimization problems.

Key words: Pickup truck; Front door; Inner plate modal; Optimization method; Strain energy; Finite element method; Modal optimization