钢板弹簧瞬态动力学特性建模

Transient dynamic modeling for leaf springs

为准确模拟钢板弹簧的迟滞非线性,以便开展精确的车辆动力学建模,提出一种钢板弹簧瞬态模型。模型用组合摩擦元对钢板弹簧迟滞机理进行了模拟,并结合动态试验运用自适应模拟退火优化方法对模型参数进行了辨识。最后用识别的参数,对其它试验曲线进行了拟合,结果表明所建模型能够较好表征钢板弹簧的动态特性,是一种合适的钢板弹簧瞬态模型。

In order to simulate the hysteresis nonlinearity of leaf springs correctly to build an accurate vehicle,s dynamic model, a transient dynamic model for leaf springs was established. The hysteresis mechanism of leaf springs was simulated with combined friction elements. The parameters of the model were identified with the adaptive simulated annealing optimization algorithm （ ASA） combined with dynamic tests. Finally, employing the proposed model and its identified parameters, a set of simulations under other test conditions were conducted. The good match between other test curves and simulation ones showed that the proposed model can effectively predict dynamic characteristics of leaf springs, so it is an appropriate one for leaf springs.