玉米堆弹性模量的测定试验研究  

Determination and Experimental Research on Maize Pile's Elastic Modulus

作　　者：程绪铎[1] 石翠霞[1] 陆琳琳[1] 唐福元[1] 

机构地区：[1]南京财经大学食品科学与工程学院,南京210003

出　　处：《中国粮油学报》2011年第8期87-91,共5页Journal of the Chinese Cereals and Oils Association

基　　金：国家科技支撑计划(2009BADA0B04-5)

摘　　要：利用TSZ-6A型应变控制式三轴仪进行三轴试验,测定围压分别为50、100、150、200 kPa时,玉米堆(水分为14.68%、16.40%、17.79%w.b)的弹性模量,同时研究围压和含水量与玉米堆弹性模量的关系。试验结果表明:对于含水量范围为14.68%～17.79%w.b的玉米堆,在围压为50～200 kPa的范围内,其弹性模量范围为165.96～891.69 kPa。根据含水量与玉米堆弹性模量的关系可以拟合得到方程:y=Ax+B,其中,A、B为与含水量有关的参数;根据围压与玉米堆弹性模量的关系可以拟合得到方程:y=Dx+E,其中,D、E为与围压有关的参数。在相同含水量条件下,玉米堆的弹性模量随着围压的增大而增大;在相同围压条件下,玉米堆的弹性模量随着含水量的增加而减小。In this paper, the elastic modulus of maize （ moisture contents are 14.68%, 16.40% and 17.79% w. b） were measured by triaxial apparatus, under the confining pressures of 50,100,150 and 200 kPa. The relationship of the elastic modulus of maize and the moisture content and the confining pressure were researched, respectively. The experimental results showed that the elastic modulus of the maize pile ranged from 165.96 kPa to 891.69 kPa in the moisture content range of 14.68% - 17.79% w. b and the confining pressure range of S0 -200 kPa. According to the relationship between the moisture content and the elastic modulus, the fitting equation was obtained ： y = Ax ＋ B, where, A and B are the parameters of moisture content. According to the relationship between the confining pressure and the elastic modulus, the fitting equation was obtained ： y = Dx ＋ E, where, D and E are the parameters of confining pressure. The elastic modulus of maize pile increased with the increase of the confining pressure in a certain moisture content ;The elastic modulus decreased with the increase of the moisture content in a certain confining pressure.

关 键 词：玉米堆 弹性模量 围压 含水量 

分 类 号：Q51[生物学—生物化学]