Bulk Material-Silo Interaction During Asymetric Flow Initiation

本研究发展了本构关系，并进行了 散料库内力的参数研究 在大型筒仓中。 三维非线性有限元 采用合适的材料进行离散化分析 加载和卸载以及材料失效的表征 标准和界面交互的真实表示 （滑粘）之间存储的散装材料和筒仓壁。 分析算法的验证将通过 比较分析期间产生的压力所获得的数据， 模型筒仓中的对称和非对称流动启动，以及 通过改变料斗角度，料斗配置， 排料口宽度，壁面摩擦力，散料本构 关系和隔离效应。

This research develops constitutive relations and carries out a parametric study of internal forces generated in bulk material storage in large silos. A three-dimensional nonlinear finite element discretization analysis will be made with proper material characterization for loading and for unloading and material failure criteria and with a realistic representation of interface interaction (slip-stick) between the stored bulk material and silo wall. Verification of the analysis algorithm will be accomplished by comparing data obtained from analyzing pressure developed during symmetric and asymmetric flow initiation in the model silo, and from tests performed by varying the hopper angle, hopper configuration, discharge opening width, wall friction, bulk material constitutive relations, and segregation effects.