摘要
考虑到筒仓仓壁和贮料的可变形性，导出了适用于柔性筒仓的修正的Janssen公式，并提出了刚度比α（≡EsR／Est）的概念。新的公式表明，刚度比α对仓壁压力分布有影响，当α＜0．1时影响较小，α≥0．1时影响比较显著；对于柔性筒仓，压力比随深度变化，当α＞0．1时随着深度增大压力比有较大幅度的减小。只有仓壁为刚性时压力比才是常数。
The modified Janssen formula, which takes account of the effects of thedeformability of bin and stored material, is developed. According to the new formula,the pressure distribution on the bin wall is affected by the ratio of rigidity α(≡EsR/Ewt). When α<0.1 the effect is small, but when α>0.1, the effect becomes important. In addition,the new formula shows that the lateral pressure ratio k varies with thedepth of the grain stored in the flexible bin,and when α>0.1,the value of k decreasesgreatly with increasing of the depth. k is constant only for rigid bin wall.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
1996年第4期107-111,共5页
Journal of China Agricultural University
