一、前 言 扭力轴由于结构简单、使用可靠,至今仍广泛作为履带越野车辆悬挂装置的缓冲弹性元件。但随着大马力发动机的发展,坦克速度愈来愈高,这就对扭力轴的缓冲能力提出更高的要求。 缓冲能力可用比位能来表示。比位能越大,缓冲能力越好。比位能可用下面公式表示: I. INTRODUCTION Because of its simple structure and reliable operation, the torsion shaft is still widely used as a cushioning elastic element for track-mounted off-road vehicle suspension devices. However, with the development of high-horsepower engines, the tank speed is getting higher and higher, which puts forward higher requirements on the torsion shaft’s cushioning capability. The buffering capacity can be expressed as specific energy. The greater the specific energy, the better the buffering ability. The specific energy can be expressed by the following formula: