The make-up of the peak value of impact loading being analysed, the theories of pressure wave and granular flow are applied to establish a calculating method for estimating the flow head impactforce.
The wave form and the spectrum of impactforce as well as the variation in sound exposure level (SEL) at a fixed point were measured which representing the relative changes of the ringing noise.
对一些板和梁进行了撞击试验,测量了撞击力随时间变化的波形及其频谱。
3
The drivability study of piling requires modeling of the hammer impact to calculate the input forcewave at the pile head.