知识与财富的链接
使用LHT-1型粮食回弹模量仪测定不同含水率、不同围压下的油菜籽堆的压缩密度与体变模量。试验结果表明：不同含水率油菜籽堆的压缩密度随着围压(0~140.0kPa)的增大而增大,并且趋向于各自的最大值,这些最大值随着含水率的增大而增大;依据试验测得的数据,建立了以含水率与围压作为自变量,压缩密度作为函数的预测模型,油菜籽堆压缩密度试验数值与模型预测数值之间拟合度较高,平均误差为0.61%。油菜籽堆的体变模量随着围压(0~140.0kPa)的增大而增大,随着含水率(7.11~13.52 % w.b.)的增大而减小。建立了以含水率与围压作为自变量,体变模量作为函数的预测模型,模型预测的体变模量与试验测定值误差较小,平均误差为4.38%。
An LHT-1 grainSmodulusStester was used to measure changes in bulk density of rapeseed at different compression pressures and moisture contents. The results showed that the bulk density of rapeseed at different moisture content increase with confining pressure (0~140.0 kPa), tend to the maximal value respectively, and the maximal value increase with moisture content. Based on the measured data, the prediction model of moisture content and confining pressure as the independent variable and compression density as the function is established. The fitting degree between test value and the predicted value at all moisture content were higher. The average error is 0.61%.The bulk modulus of rapeseed increase with confining pressure (0~140.0 kPa) and decrease with moisture content (7.11~13.52 % w.b.). The prediction model of moisture content and confining pressure as the independent variable and bulk modulus as the function is established. The error between the model predictive bulk modulus and experimental measurement at other moisture content is small. The average error is 4.38%.
