CAJ | 학술논문

目的揭示蓖麻籽压榨过程中的流变特征．方法利用单轴压榨试验装置进行应力松弛试验，获取了松弛过程中应力与时间关系．基于试验结果和半理论半经验法，利用改进的广义Maxwell模型建立了蓖麻籽压榨非线性流变模型，使用非线性回归法分段对模型参数进行求解，并将模型计算值与试验结果对比．结果和结论综合对比结果可知：模型模拟值与应力松弛试验结果吻合较好，该模型能较好的模拟压榨应变大于0．65时蓖麻籽的非线性流变特性．
목적게시비마자압자과정중적류변특정．방법이용단축압자시험장치진행응력송이시험，획취료송이과정중응력여시간관계．기우시험결과화반이론반경험법，이용개진적엄의Maxwell모형건립료비마자압자비선성류변모형，사용비선성회귀법분단대모형삼수진행구해，병장모형계산치여시험결과대비．결과화결론종합대비결과가지：모형모의치여응력송이시험결과문합교호，해모형능교호적모의압자응변대우0．65시비마자적비선성류변특성．
Objective]To reveal rheological characteristics in the process of castor seed press .[Method]The stress-time relationship of stress-relaxation process was obtained by stress-relaxation tests with the uniaxial compression equipment .Based on the results and the semi-theoretical and semi-empirical meth-od, a nonlinear rheological model was established using the improved generalized Maxwell model .The parameters of the model were achieved by nonlinear regression method .The calculated values of model were compared with the experimental results .[Result and conclusion] The results show that the model calculated values matching well with the experimental results , which means the model can simulate non-linear rheological properties of castor seeds when the strain is over 0 .65 .