ZHANG Shuai-jun,LIU Xin-ping,WANG Xiao-fei,et al.Whole Factor Analysis of Impact Damage of Soybean Seeds during Threshing Based on Transient Structural[J].Soybean Science,2017,36(03):463-469.[doi:10.11861/j.issn.1000-9841.2017.03.0463]
基于Transient Structural的脱粒过程中大豆种子撞击损伤的全因子分析
- Title:
- Whole Factor Analysis of Impact Damage of Soybean Seeds during Threshing Based on Transient Structural
- 文献标志码:
- A
- 摘要:
- 为了研究大豆种子脱粒过程中的损伤机理,首先对大豆种子脱离过程中脱粒钉齿单个子粒碰撞的周期进行了瞬态动力学分析;然后对3种碰撞参数进行混合水平全因子分析;最后建立碰撞过程的理论模型,结合瞬态动力学分析结果和理论模型进行分析。结果表明:应力最大值出现在靠近撞击部位的种子内部,撞击结束后大豆种子内部有残余应力存在;齿形和撞击截面面积对过程中的最大应力有显著影响;与直齿情况相比弓齿情况下最大应力减小,同时得到随着撞击截面面积的增大最大应力呈减小的趋势。
- Abstract:
- In order to study the damage mechanism of soybean seed threshing process, in this paper, the transient structural analysis of the cycle of single particle stripping of the thawed pegs was carried out. Then, the three kinds of impact parameters were analyzed by the mixed level total factor analysis. Finally, the theoretical model of the impact process was established, analysis of the results and theoretical model analysis.It was found that the maximum stress appeared in the seeds near the impact site, and there was residual stress in the soybean seed after the impact process. The tooth shape and impact sectional area had a significant effect on the maximum stress in the process. Compared with the straight tooth, the maximum stress is reduced in the case of the arch tooth, and the maximum stress decreases with the increase of the impact sectional area.
参考文献/References:
[1]焦维鹏,赵学观.弓齿滚筒梳刷式大豆脱粒机的设计[J].农业科技与装备,2012(6):40-42.(Jiao W P, Zhao X X. Design of squeegee soybean threshing machine with bow tooth roller[J].Agricultural Science and Technology and Equipment, 2012(6):40-42.)
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备注/Memo
基金项目:国家现代农业产业技术体系建设专项(CARS-04); 国家公益性行业(农业)科研专项基金(201303011-4)。