HUANG Zhen-hua,CHEN Hai-tao,FANG Xin,et al.Flowability Parameters for Chopped Soybean Stalk[J].Soybean Science,2011,30(05):847-850.[doi:10.11861/j.issn.1000-9841.2011.05.0847]
含水率对大豆秸秆流动力学性能的影响
- Title:
- Flowability Parameters for Chopped Soybean Stalk
- 文章编号:
- 1000-9841（2011）05-0847-04
- Keywords:
- Soybean stalk; Internal friction angle; Cohesion; Flow function value
- 分类号:
- S226.7+9
- 文献标志码:
- A
- 摘要:
- 通过直剪切试验，测定分析细碎化处理后大豆秸秆的内摩擦角、粘聚力和流动函数值，研究其流动力学特性，为大豆秸秆纤维制取机螺杆的优化设计提供理论依据。以细碎化处理后大豆秸秆含水率为试验因素，采用单因素对比试验方法，得出了细碎化处理后大豆秸秆的内摩擦、粘聚力和流动函数值随含水率变化的显著性程度及其变化趋势。结果表明：含水率对内摩擦角有显著的影响，随着含水率的降低，内摩擦角有先增大再减小的变化趋势，在含水率为75%时内摩擦角最小；含水率对粘聚力和流动函数值的影响均不显著。
- Abstract:
- Internal friction angle，cohesion and flow function value are three important flowability parameters of chopped soybean stalk.In order to get the theoretical data for designing straw fiber extruder，direct shear test was used to study the flowability parameters of chopped soybean stalk.Comparing single factor experiment was employed to study the variation tendency and significant level of chopped soybean stalk in different moisture contents.The results indicated that the internal friction angle was closely related to moisture contents.The internal friction angle was smaller when the moisture contents was 75%.With the moisture contents reduced，the internal friction angle of chopped soybean stalk increased firstly，and then decreased.The effect of moisture contents on the cohesion and flow function value of chopped soybean stalk was not significant.
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备注/Memo
基金项目：黑龙江省科技攻关重点课题资助项目（GA09B501-1）。