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基于籽粒運(yùn)動(dòng)的多維振動(dòng)篩分效率分析
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Efficiency of the Dimensional Vibration Sieve Based on the Movements of Grains
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    摘要:

    在對(duì)現(xiàn)有往復(fù)式振動(dòng)篩面上籽粒的非線性跳動(dòng)進(jìn)行理論分析的基礎(chǔ)上,，利用LS-DYNA程序研究了往復(fù)式和兩種新型多維運(yùn)動(dòng)篩面上籽粒的運(yùn)動(dòng)情況,，并提出分散性衡量指標(biāo)以反映籽粒在篩面上的分散情況,，以此對(duì)3種篩面的篩分效率進(jìn)行對(duì)比分析,。研究中依據(jù)篩面與籽粒的實(shí)物結(jié)構(gòu)和物料特性建立分析模型,，考慮籽粒與篩面及籽粒間的摩擦,、碰撞作用,，求解得出籽粒的運(yùn)動(dòng)規(guī)律,。結(jié)果表明兩種新型多維篩面運(yùn)動(dòng)形式有利于提高篩分效率,。

    Abstract:

    Based on theoretical analysis of nonlinear jump of the grain on the existing reciprocating screen, movements of grains on screen working in reciprocal and two new dimensional motion modes were researched respectively by using procedure LS-DYNA, and a dispersion measure was designed to reflect the diversification of grains on the screen, in light of which, the comparative analysis of sifting efficiency of theses three screens was performed. The research established the analytical model according to the real structure and material characteristics of screen and grains. Considering effect of friction and collision of screen to grains and grain to grain, the law of motion of grains was solved out. Results of research showed that the two new dimensional movements of vibration screen make for increase in sifting efficiency. 

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馬履中,林鈺珍,楊文亮,劉愛(ài)榮,薛城,王晶晶.基于籽粒運(yùn)動(dòng)的多維振動(dòng)篩分效率分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(10):62-66. Efficiency of the Dimensional Vibration Sieve Based on the Movements of Grains[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(10):62-66.

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