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当前位置: 首页 > 文章 > 基于Ansys Workbench的脱粒滚筒模态分析及轴的拓扑优化 甘肃农业大学学报 2016,51 (6) 134-138
Position: Home > Articles > Modal analysis for threshing cylinder and topological optimization for cylinder axis based on Ansys Workbench Journal of Gansu Agricultural University 2016,51 (6) 134-138

基于Ansys Workbench的脱粒滚筒模态分析及轴的拓扑优化

作  者：
谢军海;张雪坤;张锋伟;张涛;戴飞;韩正晟
单  位：
甘肃农业大学工学院
关键词：
脱粒滚筒;Ansys Workbench;模态分析;拓扑优化
摘  要：
【目的】针对联合收割机脱粒滚筒正常负载下的振动问题,减少共振的发生.【方法】利用三维软件Solidworks对久保田688Q全喂入联合收割机脱粒滚筒进行三维实体建模,采有限元软件Ansys Workbench进行模态分析,并对振型不明显且质量较大的轴进行结构优化.【结果】前两阶固有频率为114.49、114.67 Hz,大于滚筒激振频率(11.3~13.4Hz)和发动机的激振频率(37.3~40.7Hz),不会发生共振;滚筒杆齿最大变形量为6.16mm,小于滚筒与凹板筛10~30mm的距离,不会发生干涉;通过拓扑优化,轴质量减少40.5%,前两阶固有频率分别提高12.8%、12.7%,优化效果明显且能有效的避开共振.【结论】为联合收割机脱粒滚筒结构的设计与优化提供了参考.
译  名：
Modal analysis for threshing cylinder and topological optimization for cylinder axis based on Ansys Workbench
作  者：
XIE Jun-hai;ZHANG Xue-kun;ZHANG Feng-wei;ZHANG Tao;DAI Fei;HANG Zheng-sheng;College of Engineering,Gansu Agricultural University;
关键词：
threshing cylinder;;Ansys Workbench;;modal analysis;;topology optimization
摘  要：
【Objective】To improve the work performance of combine harvester,optimize structure design of threshing cylinder,modal analysis for threshing cylinder was carried out to reduce the occurrence of resonance.【Method】Using 3D design software Solidworks to set up 3Dsolid model for Kubota 688 Q whole-feeding combine harvester,optimizing the structure of cylinder axis with unconspicuous vibration mode and higher mass.【Result】The results showed that natural frequency of the first two order was114.49 Hz.114.67 Hz was greater than the vibration frequency of cylinder at 11.3~13.4 Hz and the vibration frequency of motor at 38.3~41.7Hz,thus the resonance would not occur.The maximum deformation of toothed bar was 6.16 mm less than the distance 10~30 mm between cylinder and concave plate screen not interfering with each other.The mass of cylinder axis was reduced by 40.5% and the first two order natural frequency was increased by 12.8% and 12.7%,respectively,and the optimization effect was obvious and the resonance was effectively avoided.【Conclusion】The study provides some reference for structure design and optimization of combine harvest threshing cylinder.

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