期刊论文

Elastic vibrating analysis of flexible threshing tooth based on ANSYS

中文

中国农机化学报

2095-5553

2016

37

5

18-22

10.13733/j.jcam.issn.2095-5553.2016.05.005

国家自然科学基金项目资助（51175173）；

本校为第一机构

为减少脱粒过程中的破损率,获得更好的脱粒效果,对柔性杆齿脱粒过程中的弹性振动进行分析。基于Timoshenko Beam理论建立柔性脱粒齿自由弯曲振动的微分方程,通过ANSYS软件对其模态进行数值计算与模拟,得到其前几阶固有频率与振型。计算柔性脱粒杆齿直径、齿长对其一阶固有频率的影响,分析柔性脱粒齿对打击力激励的响应,得到在脱粒滚筒转速及喂入速度一定的条件下,有利于脱粒的齿长和齿直径。当脱粒齿直径为75mm,直径分别为4mm、6mm、8mm时,最佳的滚筒转速分别为631r/min、561r/min及650r/min。

In order to reduce the breakage rate in the process of threshing,get better effect of threshing,elastic vibration of flexible pole tooth on threshing process are analyzed.Based on Timoshenko beam theory,the flexible threshing teeth free bending vibration differential equation was established.Through the ANSYS software to numerical calculation and simulation,the modal for the first few order natural frequency and vibration mode are obtained.The effect of flexible threshing teeth diameter,tooth length for the first order natural frequency was analyzed on the blow force excitation response.On the...