双横臂扭杆弹簧悬架系统刚度与阻尼特性分析的新方法

按虚功原理完整导出精确分析双横臂扭杆弹簧悬架系统刚度与阻尼参数的基本公式，提出确定扭杆弹簧和减振器参数的新方法。给出按给定偏频以及相对阻尼比来确定扭杆的刚度和减振器阻尼的设计步骤，并研制出简明实用的设计计算软件。试验表明虚拟试验结果与理论计算结果基本一致。该方法已成功应用于一种新型结构线控转向四轮驱动燃料电池微型汽车的悬架系统开发。

NEW METHOD FOR ANALYZING RIGIDITY AND DAMPING CHARACTERISTICS OF DOUBLE WISHBONE SUSPENSION WITH TORSION BAR

Based on the principle of imaginary work, the formulas for analyzing the rigidity and damping characteristics of double-wishbone suspensions with torsion bar are strictly derived. The definition designing procedure of torsion rigidity and the shock absorber damping based on the settled biased frequency and relative damping ratio is presented. And a new method calculating the design parameters of the torsion bar and the shock absorber is presented. The experiment shows that the simulating results are in good agreement with the theoretical results. Using above results, useful software for designing the suspension system is developed, and is successfully applied in the design of a new type of four wheel drive fuel cell vehicle with steer-by-wire.