基于整车性能的复合材料板簧阻尼特性研究

Study on Damping Characteristics of Composite Leaf Spring Based on Vehicle Performance

为了研究复合材料板簧的阻尼特性,对具有典型铺层角度的E玻璃纤维/聚氨酯层合板试样进行损耗因子试验。根据试验结果,计算了0°铺层层合板试样各个方向上的损耗因子和比阻尼。对复合材料板簧进行阻尼性能的台架试验和装车试验,获取了复合材料板簧的阻尼参数区间。层合板阻尼试验结果与复合材料板簧总成的阻尼试验结果在同一数量级,因此试验结果可信。基于试验结果和相关理论,分析了复合材料板簧的阻尼特性对整车操纵稳定性和平顺性的影响规律。装车试验结果表明,换装复合材料板簧后,样车的操纵稳定性维持原有水平,平顺性有一定的改善,与理论分析结果一致。

In order to study the damping characteristics of a composite leaf spring,the loss factor test of E-glass fiber/polyurethane laminate plate specimens with typical ply angle is carried out.Based on test results,the loss factor and specific damping in each direction of the laminate plate specimen with 0°ply angle are calculated.Both bench test and vehicle test for the damping performance of composite leaf spring are conducted,with the suitable range of damping parameters of composite leaf spring obtained.The test result of laminated plate is in the same numerical order as that of composite leaf spring assembly,so the test results are credible.Based on test results and related theory,the effects of damping characteristics of composite leaf spring on the handling stability and ride comfort of vehicle are analyzed.The results of vehicle test show that compared with original vehicle,the prototype vehicle equipped with composite leaf spring exhibits the same level of handling stability but an improved ride comfort,being consistent with the results of theoretical analysis.