Vehicle displacement acceleration and dynamic stress responses to ground spectra are calculated in time domain . The vehicle structure is divided into sprung part ( including frame and body ) and unsprung part .

在时域内计算了汽车结构在 不同 类型 路谱（地面 不 平度 函数）激励 下的位移、加速度和应力响应。

Curved single coil spring lock washers unsprung saddle

GB/T7245-1987鞍形弹簧垫圈

In order to evaluate the riding comfort and handling safety of automobiles the acceleration of sprung mass the dynamic load between wheel and road and the dynamic deflection between sprung mass and unsprung mass are determined as the criteria used for evaluation of automobile suspension systems .

根据汽车行驶平顺性和操纵稳定性的评价方法，确定簧上质量的加速度、车轮与地面间的动载荷以及簧上、 簧 下质量的动挠度为评价指标。

Unsprung weight can be reduced by using SiCp / A356 brake disc so as to reduce the weight of high-speed trains .

SiC颗粒增强铝基复合材料用于高速列车制动盘可减少 簧 下重量、实现轻量化。

Active control of vertical vibration negative influences induced by high unsprung mass of in-wheel motor electric vehicle

轮边驱动 电动车大质量电动轮垂向振动负效应主动控制

The main structure was introduced furthermore the characteristics of design for the trailer was expounded . In order to attain minimum of unsprung mass a new type of rubber torsion bar spring was adopted in suspension .

本文介绍了这种新型检测拖车的主要结构，阐述了其设计特点：悬架采用橡胶扭杆弹簧， 使 非 簧 载质量最小化；

So in the metro traction motor adopts suspension mode reducing the unsprung mass can reduce the wheel-rail action force and improve vehicle curve negotiation performance .

而在地铁 动车中，牵引电机采用架悬的悬挂方式，减小一 系 簧 下质量，可降低轮轨动作用力，改善车辆的曲线通过性能。