Bulk Material-Silo Interaction During Asymetric Flow Initiation

不对称流启动过程中散装物料与筒仓的相互作用

• 批准号: 8606098
• 负责人: Alfred Bishara
• 金额: $ 13.02万
• 依托单位: Ohio State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-08-01 至 1990-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8606098&HistoricalAwards=false
• 关键词: Bulk; Material; Silo; Interaction; During

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.

这项研究开发了本构关系，并对大型筒仓散装物料储存中产生的内力进行了参数研究。 三维非线性有限元离散分析将通过适当的装载和卸载材料特性以及材料失效标准以及所存储的散装材料和筒仓壁之间的界面相互作用（滑粘）的真实表示来进行。 分析算法的验证将通过比较分析模型筒仓中对称和不对称流动引发过程中产生的压力以及通过改变料斗角度、料斗配置、卸料口宽度、壁摩擦力、散装材料本构关系和偏析效应进行的测试获得的数据来完成。