关键词: 汽车前门；有限元分析；车门模态；车门内板厚度

Abstract: In order to analyze the safety performance of automobile doors, improve the riding comfort and the vehicles lightweight door, the influence of the door inner panel thickness on the modal of the door was studied. Taking a front door of an automobile as the research object, a finite element model of the door is established in the finite element analysis software, and modal simulation analysis is conducted for the vehicle door. According to the different thickness of the door, modal simulation analysis of 5 kinds of working conditions are designed and conducted. The results show that with the increase of the inner panel thickness, the natural frequency of the door gradually increases and the modal vibration mode of the door changes regularly, which has guiding significance for the research of safety performance of automobile doors, riding comfort and vehicle lightweight.

Key words: Vehicle front door; Finite element analysis; Door modal; Door inner panel thickness