摘要
分析了散体在振动时对仓壁的作用力;通过试验研究了振动时农业散体对作用在仓壁上的压力的影响。结果表明,对散体施加振动,可使散体的密度增大,散体对仓壁的压力增大,并可引起散体对仓壁的动载。动载的频率与激振频率一致,相位略为滞后,峰值较大。在粮仓设计时对此应予重视。
The force of bulk solids on the barn wall is theoretically analyzed.The influence of bulk solids pressure to the barn wall while vibration is tested.Results indicate that intro- duction of vibration would increase the density of bulk solids,the solids pressure to the barn wall,and cause dynamic pressure.The dynamic pressre has the same frequency and slight- ly phase delay with the applyed vibration,and its peak value is 3 times of static one.The effect of vibration should be considered in grain-barn design.
