The force and moment exerted on the solid body are expressed as the rate of change of the first-and second-order kinetic vorticity moments, respectively.
作用在任意运动物体(系)上的力和力矩可以分别表示成流场中动力学涡量的一阶矩和二阶矩随时间的变化率。
2
In most shell problems the moments and direct forces will not be of simultaneous importance so that yield relations between moment and force are of limited importance.
In this paper the performance characteristics of the moter vehicle during braking are studied, the exciting force and moments applied to motor vehicle braking on a straight way are discussed.