...幅: Amplitude of vibration 初始相位角: initial phase angle 无阻尼自由振动是简谐振动 28 28 结构的自振周期(natural period) ) sin( ) ( a t a t y ) 2 ( t y ) ) 2 ( sin( a t a ) 2 sin( a t a ...
It is important to select reasonable naturalperiod of high-rise building in seismic design.
设计地震区的高层建筑时，选择结构的适宜自振周期是十分重要的。
2
According to axially naturalperiod, the relation of the dynamic magnification factor vs the linearly loading time under linearly loading is deduced and presented.
推导并给出了轴向固有周期下线性加载动力放大系数随线性加载时间的变化关系。
3
Therefore, in the design and research of FPSO in shallow water, the effects of the shallow water depth should be taken into account for determining the naturalperiod of motions.