基于ANSYS的耕地装置设计与优化
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摘要
为进一步提升耕地装置的作业效率与稳定性程度,对其展开结构设计与优化。通过理解耕地机的旋耕机理与作业过程中耕地核心执行部件的运动特性,利用优化设计理论建立有限元理论模型,并依据严谨的设计流程和耕地装置结构的装配特点,在UG中建立耕地装置核心执行部件的三维物理模型,与ANSYS恰当对接后导入进行预处理,科学高效地划分网格与施加载荷,得出耕地装置关键位置的位移分布云图和应力分布云图,并有效避免刀齿与机轴产生共振。试验表明:参数结构优化合理;选取旋耕入土深度、土壤蓬松度、地表平整度和整机工作稳定性4项指标作为衡量标准,结构优化后,在满足10%～40%的行业标准要求条件下,经测量平均地表平整度提高了4%,整个耕地装置的工作稳定性提高了5. 1%。此设计合理可靠,可为相似农用机具的机构设计提供一定参考。
In order to further improve the efficiency and stability of the cultivated land machine,the structure design and optimization were carried out. By understanding the mechanism of the rotary tillage of cultivated land machine and the movement characteristics of the core executive parts during the operation,the theory model of the finite element was established by the optimization design theory.And through the rigorous design process and the structure assembly characteristics of the cultivated land machine,the three-dimensional physical model of the core executive parts of the cultivated land device was established in UG,and the preprocessing was carried out after the proper docking with ANSYS. The scientific and efficient grid division and applied load were done,and the displacement and stress distribution cloud of the key position of the cultivated land machine were obtained. Through avoiding the resonance of the blade and the machine shaft,and the test showed that the parameter structure was optimized and reasonable. Four indexes of rotary tillage soil depth,soil fluffiness,surface flatness and machine stability were selected as the measuring standards,after the ANSYS simulation of the structure size,the average surface flatness increased by 4% and the working stability of the cultivated land machine increased by 5.1% under the industry standard conditions in satisfied the requirement of 10%-40%,this design was reasonable and reliable,which could also provide a reference for similar agricultural machinery design.
In order to further improve the efficiency and stability of the cultivated land machine,the structure design and optimization were carried out. By understanding the mechanism of the rotary tillage of cultivated land machine and the movement characteristics of the core executive parts during the operation,the theory model of the finite element was established by the optimization design theory.And through the rigorous design process and the structure assembly characteristics of the cultivated land machine,the three-dimensional physical model of the core executive parts of the cultivated land device was established in UG,and the preprocessing was carried out after the proper docking with ANSYS. The scientific and efficient grid division and applied load were done,and the displacement and stress distribution cloud of the key position of the cultivated land machine were obtained. Through avoiding the resonance of the blade and the machine shaft,and the test showed that the parameter structure was optimized and reasonable. Four indexes of rotary tillage soil depth,soil fluffiness,surface flatness and machine stability were selected as the measuring standards,after the ANSYS simulation of the structure size,the average surface flatness increased by 4% and the working stability of the cultivated land machine increased by 5.1% under the industry standard conditions in satisfied the requirement of 10%-40%,this design was reasonable and reliable,which could also provide a reference for similar agricultural machinery design.
引文
[1]朱留宪,杨玲,朱超,等.基于SPH算法的微耕机旋耕切土仿真研究[J].农机化研究,2014,36(6):19-22.
[2]刘加红,袁刚,杨永发.旋耕起垄打塘多功能复合整地机的研制[J].林业机械与木工设备,2017(11):34-36.
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[16]王世猛,谢杭佳,李果,等.微耕机变速器的振动特性分析--基于ANSYS Workbench[J].农机化研究,2014,36(10):17-20.
[17]肖成林,周德义,王志明,等.基于ANSYS的旋耕机210普箱有限元模态分析[J].农机化研究,2011,33(10):23-26.
[18]日力夏提·阿布都热西提,尼加提·玉素甫,买买提明·艾尼.旋耕刀结构优化设计与动力稳定性分析[J].农机化研究,2016,38(1):57-61.
[19]于晓阳,刁培松,陈美舟.与微耕机匹配的振动式根茎类收获机设计与试验[J].农机化研究,2018,40(10):104-108.
[20]任永豪.微耕机旋耕刀辊模态仿真与试验研究[D].重庆:西南大学,2014.
[2]刘加红,袁刚,杨永发.旋耕起垄打塘多功能复合整地机的研制[J].林业机械与木工设备,2017(11):34-36.
[3]李燕,赵明,刘军.基于Pro/E和ANSYS的旋耕机圆锥齿轮有限元分析[J].农机化研究,2010,32(4):34-36.
[4]李文春,王斌,刘晓丽,等.基于ANSYS的果园避障旋耕机旋耕刀片有限元分析[J].江苏农业科学,2017(1):193-197.
[5]张攀峰,胡灿,王旭峰,等.旋耕钉齿式耕层残膜回收机起膜部件动力学分析[J].农机化研究,2018,40(4):14-18,25.
[6]张琦,王伟,廖结安.枣园施肥机开沟器的设计与有限元分析[J].农机化研究,2016,38(4):23-28.
[7]田耘,赵亚祥,刘选伟,等.基于ANSYS Workbench的多功能旋耕机机架的模态分析[J].中国农机化学报,2015(6):1-3,18.
[8]仇倩倩,张喜瑞,梁栋,等.香蕉免耕地深松铲的设计与有限元分析[J].农机化研究,2013,35(5):64-67.
[9]葛云,吴雪飞,王磊,等.基于ANSYS微型旋耕机旋耕弯刀的应力仿真[J].石河子大学学报:自然科学版,2007(5):627-629.
[10]朱留宪.基于SPH算法的微耕机旋耕刀有限元仿真与优化[D].重庆:西南大学2012.
[11]朱河霖.大马力旋耕机旋耕刀的激光冲击强化研究[D].扬州:扬州大学,2012.
[12]李尚平,王梦萍,莫翰宁,等.基于动态特性的甘蔗收获机刀架仿真和模态分析[J].农机化研究,2018,40(12):17-22,29.
[13]田耘,金亮,刘选伟,等.旋耕机齿轮箱主轴与直齿锥齿轮装配体模态分析[J].中国农机化学报,2015(2):6-8.
[14]王建超,张建瓴,张帆,等.ANSYS在旋耕起垄机刀片设计中的应用[J].农机化研究,2012,34(1):215-217,221.
[15]毛卓群.旋耕机传动齿轮箱箱体的有限元分析及结构优化设计[D].南京:南京农业大学,2013.
[16]王世猛,谢杭佳,李果,等.微耕机变速器的振动特性分析--基于ANSYS Workbench[J].农机化研究,2014,36(10):17-20.
[17]肖成林,周德义,王志明,等.基于ANSYS的旋耕机210普箱有限元模态分析[J].农机化研究,2011,33(10):23-26.
[18]日力夏提·阿布都热西提,尼加提·玉素甫,买买提明·艾尼.旋耕刀结构优化设计与动力稳定性分析[J].农机化研究,2016,38(1):57-61.
[19]于晓阳,刁培松,陈美舟.与微耕机匹配的振动式根茎类收获机设计与试验[J].农机化研究,2018,40(10):104-108.
[20]任永豪.微耕机旋耕刀辊模态仿真与试验研究[D].重庆:西南大学,2014.