基于SPH的旋耕刀一土壤耦合模型仿真模拟与分析

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中图分类号：S222.1 文献标识码：A 文章编号：2095-5553（2026）03-0044-08

DOI：10.13733/j.jcam.issn.2095-5553.2026.03.007

等．基于SPH的旋耕刀—土壤耦合模型仿真模拟与分析[J]．中国农机化学报，2026，47（3）：44—50，67

Abstract：Therotarytiler working inhardsoilconditions notonlyleads togreater powerconsumption butalsoshortens the lifespanofthetilingblades.Thecomplexityoffieldworkingconditionscansignificantlyafectthedeterminationofpower consumptionparameters.Tooptimizetherotationbladesofthetiling bladesandreducepowerconsumptionduringoperation，this paperuses SolidWorksforstructuraldesignofthetillng bladesandestablishesatiling blade-soilcouplingmodelbyusing Smooth ParticleHydrodynamics（SPH）tostudythemotionrelationship betweenthetiling bladeandthesoil.Orthogonal experiments andresponsesurface methodologyare used to optimize powerconsumption，with bending angleradius，wrap angle，and bendingangleasinfluencingfactorsandpowerconsumptionastheoptimizationcriterion.Through range analysisandregresionanalysisoforthogonaltestresults，theoptimalstructuralparametercombinationforthetiling bladeisdetermined.Theresponsesurfacemethodidentifiestheoptimalcombinationofstructuralparameters，whichisvalidated with the best parameters being a bending angle radius of 29mm ，a wrap angle of 37∘ ，and a bending angle of 124∘ ，with a predicted power consumption of 0.106kW .Under the optimal parameters，the error between the predicted value ofthe response surface model and the actual simulated value is 2.830% . The relative error between the field test power consumption and the simulated power consumption is 12.844% ，confirming the accuracy of the simulation model.

Keywords：cultivator;soil;coupling model;powerconsumption;smooth particle hydrodynamics;response surface method

0 引言

在农业机械化耕作中，土壤的硬度直接影响着耕作的难易程度，当土壤硬度较高时，农用机械在翻耕、犁地、播种等过程中会面临更大的阻力，需要消耗更多的能量才能完成耕作，并且会缩短耕刀的使用寿命[1，2]。（剩余13215字）