蓖麻蒴果剥壳过程中的力学性能有限元仿真  

Finite Element Simulation on Mechanical Property of Castor Capsule During Husking

作　　者：刘汝宽[1,2] 程鑫鑫[3] 肖志红[2] 李昌珠[2] 黄志辉[3] 叶红齐[1] 

机构地区：[1]中南大学化学与化工学院,长沙410083 [2]湖南省林业科学院,长沙410004 [3]中南大学机电工程学院,长沙410083

出　　处：《中国粮油学报》2015年第5期62-66,共5页Journal of the Chinese Cereals and Oils Association

基　　金：国家林业局公益项目(201304608);湖南省科技计划(2013NK3059)

摘　　要：以湘蓖一号为研究对象,通过数理统计得到了蓖麻蒴果基本形态结构的数值;采用有限元分析法建立了蓖麻蒴果有限元模型,对蓖麻蒴果顶压和中压2种方式进行过程描述和对比。结果表明:有限元仿真能很好地描述蓖麻蒴果破壳时的受力状态及破裂状态,可作为研究蓖麻蒴果剥壳的一种科学手段;在顶压或中压条件下,蓖麻蒴果破壳时的形变量均远远小于相应蒴果壳体与蓖麻籽之间的空腔距离,有足够的操作空间来实现蓖麻蒴果剥壳后蓖麻籽的完整率。Castor Xiang 1# was selected as research subject to get its values of the basic morphological structure by mathematics statistics and establish a model by finite element analysis. Two different kinds of pressure manners of castor capsule, called top pressure and medium pressure, were described and compared. The results showed that it was feasible to describe the stress state and fracture state of castor capsule by finite element during husking, which could be the scientific method to study the husking of castor capsule. Under the top pressure or medium pressure condition, shell deformation volume of castor capsule when broken was much smaller than the cavity between the castor capsule shell and its＇ seeds, making enough room for maneuver to achieve a high integrity rate of castor seeds.

关 键 词：有限元 蓖麻蒴果 力学分析 脱壳机械 

分 类 号：S226.4[农业科学—农业机械化工程]