认为仓贮散体为服从Mohr—Coulomb屈服准则的理想弹塑性材料 ,散体与仓壁之间的摩擦属于Coulomb摩擦接触问题。就刚性筒仓讨论研究了静态时影响散体进入屈服状态的有关因素 ,提出了一种由散体临界内摩擦角来判断静态散体是否进入屈服状态的方法 ,并用有限元法做了数值模拟 It is considered that the storage bulk is an ideal elastic-plastic material that obeys the Mohr-Coulomb yield criterion. The friction between the bulk and the silo belongs to the Coulomb frictional contact problem. In this paper, we discuss the factors that affect the yield state of the bulk in static state, and propose a method to judge whether the static bulk enters the yield state by the critical internal friction angle of the bulk. The numerical simulation is done by finite element method