本文研究了板料成形模拟中减速系数选取和压边圈简化模型，编制了相应的有限元数值模拟程序SPID。
In this paper, we studied how to select the deceleration coefficient and how to simplify the blank holder model in the simulation of the sheet metal metal forming process.
分析了车辆的制动过程，阐述了制动力矩、制动减速度与地面附着系数之间的关系。
This paper analyses dynamic feature of vehicle brake and expounds relations between brake torque, brake deceleration and adhesion coefficient on road surface.
根据设计要求之制动减速度和制动力分配比，提供摩擦系数计算方法和顺序，用于合理确定台试时的摩擦系数允差。
According to the design requirements of braking deceleration and distribution proportion between braking forces of front and rear wheel, a procedure of calculation for friction factor is provided.
动态测压结果表明，在减速过程中，负压系数增大；
The results of dynamic pressure measurements show that pressure coefficients are increased when the free stream decelerated.
动态测压结果表明，在减速过程中，负压系数增大；
The results of dynamic pressure measurements show that pressure coefficients are increased when the free stream decelerated.
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