摘要
水稻插秧机发生共振会导致起支撑和固定作用的机架断裂,给机械的正常工作和人身安全造成巨大隐患。为判断水稻插秧机机架是否会发生共振引起结构失效,运用ANSYS有限元分析中的静力学和模态分析方法计算水稻插秧机的所受应力和固有频率,并根据其自身结构数据计算工作频率,判断是否会发生变形失效。分析机架薄弱位置,基于正交实验提出优化方案。优化后的水稻插秧机机架结构在正常作业条件下最大等效应力降低11.09 MPa,最大总变形减小5.28 mm,最大质量减少5.6 kg,机架1阶固有频率提升10.17 Hz。相比于优化前,前6阶固有频率提高至13.49~50.70 Hz,高于发生共振时的安全区域。此研究为进一步解决机架振动问题和结构改进提供参考。
The resonance of the rice transplanter can lead to the failure of the frame,which plays a critical role in supporting and fixing the machine,posing significant risks to both the normal operation of the equipment and personnel safety.To determine whether the frame of the rice transplanter would undergo resonance leading to structural failure,the static and modal analysis methods in ANSYS finite element analysis were used to calculate the stress and natural frequencies borne by the rice transplanter.Additionally,the operating frequency was calculated based on its own structural data to judge whether deformation failure would occur.The weak positions of the frame were analyzed,and an optimization scheme was proposed based on orthogonal experiments.For the optimized frame structure of the rice transplanter,under normal operating conditions,the maximum equivalent stress was reduced by 11.09 MPa,the maximum total deformation was decreased by 5.28 mm,the maximum mass was reduced by 5.6 kg,and the first-order natural frequency of the frame was increased by 10.17 Hz.Compared with that before optimization,the natural frequencies of the first six orders were increased to 13.49~50.70 Hz,which were higher than the safe area when resonance occurs.This provides a reference for further solving the vibration problem of the frame and improving the structure.
作者
陈子旭
张宏建
王金星
傅生辉
孙林林
荆林龙
曹鑫鹏
刘双喜
CHEN Zixu;ZHANG Hongjian;WANG Jinxing;FU Shenghui;SUN Linlin;JING Linlong;CAO Xinpeng;LIU Shuangxi(College of Mechanical and Electronic Engineering,Shandong Agricultural University,Taian 271018,Shandong,China;Shandong Provincial Engineering Laboratory of Agricultural Equipment Intelligence,Taian 271018,Shandong,China;Shandong Provincial Key Laboratory of Horticultural Machinery and Equipment,Taian 271018,Shandong,China)
出处
《农业装备与车辆工程》
2025年第7期1-10,共10页
Agricultural Equipment & Vehicle Engineering
基金
山东省现代农业产业技术体系水稻农业机械岗位专家项目(SDAIT-17-08)
山东省青年科技人才托举工程(SDAST2024QTA050)。
关键词
水稻插秧机
机架
静力学分析
模态分析
优化设计
rice transplanter
frame
static analysis
modal analysis
optimization design
