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基于ANSYS/LS—DYNA的蘆竹切割—進給速度匹配研究
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Fund of Independent Innovation of Huazhong Agricultural University (2011PY021)


Matching of Cutting and Feeding Speed for Reaping Arundo donax L. Based on ANSYS/LS
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    摘要:

    高粗莖稈作物因莖桿硬度和剛度大,，機械化收割難度大。以蘆竹為對象,，以高粗莖稈作物通用型回轉鏈式切割器為基礎,，應用ANSYS/LS—DYNA建立了鋸片—蘆竹切割破壞動態(tài)模擬有限元模型，動態(tài)模擬了蘆竹切割破壞過程,，試驗驗證了獲取鋸齒切割破壞蘆竹過程的載荷—位移歷程曲線的可行性及蘆竹破壞的模擬計算模型的有效性,。提出了回轉鏈式切割器切割—進給速度匹配修正系數(shù)概念，確定了切割蘆竹時進給速度和切割速度分別取1.00m/s和2.80m/s為最佳速度匹配,，其切割器工作速度匹配修正系數(shù)為1.22,。研究結果為蘆竹收割機的傳統(tǒng)系統(tǒng)參數(shù)優(yōu)化設計提供了理論依據。

    Abstract:

    The crops with thick-tall stem are difficult to be harvested by machine due to hardness and stiffness of the stem. In the present study, a dynamic simulation model of Arundo donax L. penetration was established by finite element numerical simulation technology, of which based on a general rotary-chain cutter for thick-tall stem. The results showed that the optimized matching parameters of cutting process for cutting and feeding speed were 2.80m/s and 1.00m/s, respectively. The optimal correction factor of cutting process for Arundo donax L. was 1.22. The study provided a methodological basis for the analysis of cutting process for thick-tall stems.

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廖宜濤,廖慶喜,舒彩霞,田波平,黃海東.基于ANSYS/LS—DYNA的蘆竹切割—進給速度匹配研究[J].農業(yè)機械學報,2011,42(Z1):30-34. Liao Yitao, Liao Qingxi, Shu Caixia, Tian Boping, Huang Haidong. Matching of Cutting and Feeding Speed for Reaping Arundo donax L. Based on ANSYS/LS[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(Z1):30-34.

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