气垫车辆围裙结构设计与分析

DESIGN AND ANALYSIS ON APRON STRUCTURE OF AIR-CUSHION VEHICLES

基于某型试验样车的特点,简述了围裙在气垫车辆上的作用,比较了气垫车辆应用的各种不同围裙形式的优缺点,选择了折角指型围裙用于该型气垫车辆。为提高气垫车辆的通过性能、垫升性能和使用性能,围裙的抗撕裂性和抗翻折性,对围裙结构和几何参数进行了理论设计与力学分析。针对传统气垫围裙经验设计方法的缺点, 根据能量互等定理得到围裙结构的变形协调条件,采用四线寻点的方法确定了围裙的结构参数,制作并在试验样车上安装了折角指围裙,在实车垫升试验中取得了较好的效果。

The effects of aprons on an air-cushion vehicle are presented in brief and several different types of aprons used in air-cushion vehicles are compared based on the specialties of certain prototype vehicles. And the folding angle finger apron is chosen in this type of vehicle. The structure and geometry parameters of the apron are designed and analyzed in order to improve the travelling performance of the vehicle, maneuverability, anti-avulsion and anti-turnover characteristics of apron structure. The distortion corresponding conditions of the apron structure are acquired according to the theorem of energy equivalence. The structure parameters of the apron are confirmed through the method of finding points by four lines, which can avoid imprecision of traditional experiential design methods and gets the good effect in the test.