2CM-2型起垄式木薯种植机机架的模态分析及拓扑优化
|
摘要
以2CM-2型起垄式木薯种植机机架为研究对象,采用UG软件建立了机架的有限元模型,利用NX NASTRAN解算器进行了机架的模态特性分析,确定了机架前6阶模态振动固有频率范围、振动位移最大值和主要振型特征,明确了机架发生共振的情况,并进行机架拓扑优化。研究结果表明:优化后木薯种植机机架的前6阶模态固有频率为30.778～120.965 Hz,避免了路面激振频率与固有频率发生重叠共振,机架优化合理,动态特性良好。本研究为2CM-2型起垄式木薯种植机机架的优化改进提供理论参考依据,对提高木薯种植机机架的使用寿命具有重要意义。
Taking the 2CM-2 ridged cassava planter frame as the research object, the finite element model of the frame was established by UG software. The modal characteristics of the frame were analyzed by NX NASTRAN solver, and the front of the frame was determined. The natural frequency range of the 6 th-order modal vibration, the maximum vibration displacement and the main mode characteristics are used to clarify the resonance of the frame and optimize the topology of the frame. The results show that the natural frequency of the first 6 modes of the optimized cassava planter frame is 30.778～ 120.965 Hz, which avoids the overlap resonance between the excitation frequency and the natural frequency of the road. The frame optimization is reasonable and the dynamic characteristics are good. This study provides a theoretical reference for the optimization and improvement of the 2CM-2 ridged cassava planter frame, which is of great significance for improving the service life of the cassava planter frame.
Taking the 2CM-2 ridged cassava planter frame as the research object, the finite element model of the frame was established by UG software. The modal characteristics of the frame were analyzed by NX NASTRAN solver, and the front of the frame was determined. The natural frequency range of the 6 th-order modal vibration, the maximum vibration displacement and the main mode characteristics are used to clarify the resonance of the frame and optimize the topology of the frame. The results show that the natural frequency of the first 6 modes of the optimized cassava planter frame is 30.778～ 120.965 Hz, which avoids the overlap resonance between the excitation frequency and the natural frequency of the road. The frame optimization is reasonable and the dynamic characteristics are good. This study provides a theoretical reference for the optimization and improvement of the 2CM-2 ridged cassava planter frame, which is of great significance for improving the service life of the cassava planter frame.
引文
[1]蒋亚军,廖宜涛,秦川,等. 4SY-2.9型油菜割晒机机架振动分析及改进[J].农业工程学报,2017,33(09):53-60.
[2]刘选伟,金亮,王景立.基于ANSYS Workbench的深松机机架模态分析[J].农机化研究,2015,37(05):29-31,35.
[3]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.
[4]王方平,梅益,刘乔英.采棉头锥齿箱有限元模态分析[J].农机化研究,2011(04):36-38+42.
[5]王洪亮,张瑞宏,王明友,等.基于N X NASTRAN的旋耕刀轴结构与疲劳分析[J].中国农机化学报,2013,34(03):78-83.
[6]李耀明,孙朋朋,庞靖,等.联合收获机底盘机架有限元模态分析与试验[J].农业工程学报,2013,29(03):38-46,301.
[7]严晓丽,何冯光,李明,等. 1SG-230型甘蔗深松旋耕联合作业机机架结构参数优化[J].现代农业装备,2018(01):1-47.
[8]严晓丽,何冯光,李明,等. 3ZSP-2型甘蔗中耕施肥培土机机架的有限元分析[J].现代农业装备,2017(06):32-36.
[9]严晓丽,何冯光,李明,等.甘蔗深松旋耕联合作业机机架的静力学分析[J].现代农业装备,2018(02):28-33.
[10]吴思浩,李粤,张喜瑞,等.基于模态分析的立式香蕉秸秆粉碎还田机机架优化[J].农机化研究,2017,39(05):46-51.
[11]李琳琳,王丽红,坎杂,等.矮化密植红枣收获机骑跨式机架的有限元分析[J].农机化研究,2017,39(01):25-31
[12]崔振德,邓干然,李国杰,等.木薯种植机种茎切断装置的设计[J].农机化研究,2017,39(04):144-148.
[13]李海亮,汪春,胡军,等.宽幅播种机折叠机架的模态分析[J].农机化研究,2017,39(06):60-63+68.
[14]乔白羽,丁素明,薛新宇,等.基于ABAQUS的喷雾机喷杆结构拓扑优化[J].农机化研究,2019,41(05):39-43.
[15]李尚平,陈曾雄,周敬辉,等.基于动态特性的甘蔗收获机切割器拓扑优化设计[J].农机化研究,2017,39(09):25-30.
[16]沈伟,廖敏,王强,等.基于拓扑优化的变速箱壳体轻量化设计[J].农机化研究,2018,40(04):234-241.
[17]张宁,赵满全,史艳花,等.双圆盘割草机传动系的应力应变及振动特性分析[J].农机化研究,2014,36(10):21-24.
[2]刘选伟,金亮,王景立.基于ANSYS Workbench的深松机机架模态分析[J].农机化研究,2015,37(05):29-31,35.
[3]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.
[4]王方平,梅益,刘乔英.采棉头锥齿箱有限元模态分析[J].农机化研究,2011(04):36-38+42.
[5]王洪亮,张瑞宏,王明友,等.基于N X NASTRAN的旋耕刀轴结构与疲劳分析[J].中国农机化学报,2013,34(03):78-83.
[6]李耀明,孙朋朋,庞靖,等.联合收获机底盘机架有限元模态分析与试验[J].农业工程学报,2013,29(03):38-46,301.
[7]严晓丽,何冯光,李明,等. 1SG-230型甘蔗深松旋耕联合作业机机架结构参数优化[J].现代农业装备,2018(01):1-47.
[8]严晓丽,何冯光,李明,等. 3ZSP-2型甘蔗中耕施肥培土机机架的有限元分析[J].现代农业装备,2017(06):32-36.
[9]严晓丽,何冯光,李明,等.甘蔗深松旋耕联合作业机机架的静力学分析[J].现代农业装备,2018(02):28-33.
[10]吴思浩,李粤,张喜瑞,等.基于模态分析的立式香蕉秸秆粉碎还田机机架优化[J].农机化研究,2017,39(05):46-51.
[11]李琳琳,王丽红,坎杂,等.矮化密植红枣收获机骑跨式机架的有限元分析[J].农机化研究,2017,39(01):25-31
[12]崔振德,邓干然,李国杰,等.木薯种植机种茎切断装置的设计[J].农机化研究,2017,39(04):144-148.
[13]李海亮,汪春,胡军,等.宽幅播种机折叠机架的模态分析[J].农机化研究,2017,39(06):60-63+68.
[14]乔白羽,丁素明,薛新宇,等.基于ABAQUS的喷雾机喷杆结构拓扑优化[J].农机化研究,2019,41(05):39-43.
[15]李尚平,陈曾雄,周敬辉,等.基于动态特性的甘蔗收获机切割器拓扑优化设计[J].农机化研究,2017,39(09):25-30.
[16]沈伟,廖敏,王强,等.基于拓扑优化的变速箱壳体轻量化设计[J].农机化研究,2018,40(04):234-241.
[17]张宁,赵满全,史艳花,等.双圆盘割草机传动系的应力应变及振动特性分析[J].农机化研究,2014,36(10):21-24.