土木工程与管理学报2016，Vol.33Issue(6)：43-47,5.
基于PFC3 D的浅圆仓偏心卸料离散元研究
Discrete Element Analysis of Squat Silo Under Eccentric Discharge by PFC3 D
摘要
Abstract
Based on silo experiment,a discrete element model of squat silo was made by PFC3D. The comparison about lateral pressure among model,experiment and standard in full load condition shows a good simulated effect in the model,which proves that lateral pressure can be simulated by PFC3D accurately and parameter choose of the model is reasonable. From the analysis about squat silo with 0 . 75 height-to-diameter ratio and 0 . 3 eccentricity under eccentric discharge on velocity field and stress field,eccentric discharge model of funnel shape about stored material is found in squat silo,which is different from bulk flow characteristic in deep silo. Over-pressure phenomenon is found on the silo wall during the process of eccentric discharge and the maximum of over-pressure coefficient is 1 . 25 . The results of parameter analysis about the lateral pressure show that the over-pressure coefficient will increase with the increase of the eccentric discharge speed and the eccentricity. In premises of small eccentricity and low discharge speed,over-pressure phenomenon can be ignored about the design of squat silo wall. The conclusion can be reference for the engineering design and the future research.关键词
浅圆仓/PFC3D/离散元/偏心卸料/侧压力/参数分析Key words
squat silo/PFC3 D/discrete element/eccentric discharge/lateral pressure/parameter analysis分类
建筑与水利引用本文复制引用
程奇鹏,孙巍巍,卢赛..基于PFC3 D的浅圆仓偏心卸料离散元研究[J].土木工程与管理学报,2016,33(6):43-47,5.基金项目
国家自然科学基金（51308297）；江苏省普通高校学术学位研究生创新计划项目 （）
