基于离散元法的仿生旋耕刀作业性能研究

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中图分类号：S222.3 文献标识码：A 文章编号：2095-5553（2025）10-0082-09

Abstract：To solve the problems large tilage resistance and poor straw burial qualityin straw returning by rotary tillage，abionicrotarybladewith the structuralcharacteristicsmolerat’sclawwasdesigned basedonthecontourcurves claw tips molerats.Aorthogonal simulation experiment was conducted withthree factorsand threelevels，including theinfluencing factors thediameter the bionicarc，the working width，andthebendingangle，andtheresponse indexesthe torqueandthe uniformity straw spatial distribution using EDEM.Theoptimal structural parameters were：the diameter bionic arc is 12mm ，working width is 45mm ，and bending angleis 120∘ .Compared with the national standard rotary blade，the torque was reduced by 5.8% ，and the coefficient variation the straw spatial distribution was decreased by 8.3% . It was proved that the bionic rotary blade could improve the straw burying quality andreducethetillageresistance.Then，afieldtilagecomparisontestwascariedoutbetweenthebionicrotarybladeand the national standardrotary blade.Theresultsshowedthatthevariationlaws the torqueandthecoeficient variation thestrawspatialdistributionthe tworotary bladesunderdiferenttilageparameterswere thesame，butcompared with the national standard rotary blade，the torque the bionic rotary blade decreased by about 7% ，and the coefficient variation the straw spatial distribution decreased by more than 11% ：

Keywords：bionic；rotary blade；discrete element method;torque blade；spatial distribution straw

0 引言

秸秆还田既是保护性耕作的具体要求[1]，也是土壤培肥与丰产增效的重要技术途径[2]。（剩余13555字）