CAJ | 학술논문

针对微耕机旋耕作业部件与水田土壤间的作用机理研究匮乏,作业过程出现碎土性能差、效率低、和功耗大等问题,以1 WGQ 4 型微耕机为对象,采用有限元法( FEM )和光滑粒子流体动力学方法 ( Smoothed Particle Hydrodynamics , SPH ) 的耦合方法,构建土壤-旋耕作业部件系统的动力学仿真模型,在细观上对旋耕作业部件刀片与水田土壤间的作用过程进行动力学分析. 结果表明:构建的土壤-旋耕作业部件系统的动力学仿真模型精度高;水田旋耕刀片向后抛起的土壤少,与挡板碰撞破碎的土壤少,水田微耕机采用前耕后驱设计方案有利于提高其碎土性能.
침대미경궤선경작업부건여수전토양간적작용궤리연구궤핍,작업과정출현쇄토성능차、효솔저、화공모대등문제,이1 WGQ 4 형미경궤위대상,채용유한원법( FEM )화광활입자류체동역학방법 ( Smoothed Particle Hydrodynamics , SPH ) 적우합방법,구건토양-선경작업부건계통적동역학방진모형,재세관상대선경작업부건도편여수전토양간적작용과정진행동역학분석. 결과표명:구건적토양-선경작업부건계통적동역학방진모형정도고;수전선경도편향후포기적토양소,여당판팽당파쇄적토양소,수전미경궤채용전경후구설계방안유리우제고기쇄토성능.
Interaction mechanism of rotary tiller ' s rotary operation components and soil is unknown on paddy field .In the operation process , poor pulverizing ability and stability , low efficiency , and large power consumption occurs ."1 WGQ4" micro-tillage machine was used as the study object .Dynamics simulation model of soil -rotary tillage opera-tion components system was established .The coupling method of finite element method ( FEM ) and smooth particle hy-drodynamics method ( Smoothed Particle Hydrodynamics , SPH) was used in the model .The dynamic analysis of interac-tion process of rotary tillage blade and soil was studied in meso-level.The results show that the dynamics simulation model has high precision .The soil was less thrown up backward by rotary blade , which decreases the impact pulverizing effect of the soil and flapper .Using tilling at first and then driving , the pulverizing effect of paddy-field rotary tiller can be increased .