基于ANSYS Workbench/Ls-Dyna的锤片—菌草粉碎系统的功耗模型分析  

Analysis on power consumption model of hammer-JUNCAO mill system based on ANSYS Workbench/Ls-Dyna

作　　者：万家明 陈伟祥 陈重成 郑书河 WAN Jiaming;CHEN Weixiang;CHEN Chongcheng;ZHENG Shuhe(College of Mechanical and Electrical Engineering,Fujian Agriculture and Forestry University/Modern Agricultural Equipment Engineering Research Center of Fujian University,Fuzhou,Fujian 350002,China)

机构地区：[1]福建农林大学机电工程学院/现代农业装备福建省高校工程研究中心,福建福州350002

出　　处：《福建农林大学学报（自然科学版）》2023年第1期127-134,共8页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：福建农林大学学科交叉融合专项(XKJC-712021030)。

摘　　要：为了解决锤片式粉碎机在粉碎菌草过程中效率低、耗能高等问题,对菌草的粉碎过程以及功耗变化情况进行研究,设计了一种新型锤片,并利用ANSYS Workbench/Ls-Dyna对锤片与菌草的碰撞粉碎过程进行了数值仿真分析.以转速、斜面倾角以及茎秆直径为影响因素,以最大碰撞力和平均功率为试验指标进行单因素试验,确定各个因素的取值范围;通过多因素试验得到最大碰撞力以及平均功率的回归模型,在茎秆直径为22 mm的条件下以最小平均功率为主要优化目标,以最大碰撞力为次要目标得到最佳参数,即转速2623.18 r·min^(-1),斜面倾角7.12°,在此参数条件下,最大碰撞力95.37 N,平均功率165.15 W.In order to solve the problems of low crushing efficiency and high energy consumption in the process of mycelium crushing,a new type of hammer tailored to the crushing process of JUNCAO and dynamic power consumption was designed via ANSYS Workbench/Ls-Dyna software.Single factor tests of rotation speed,inclination angle of inclined plane and stem diameter were firstly conducted to determine the maximum impact force,average power value and parameter ranges for subsequent multi-factor test.Then regression models of maximum impact force and average power were established through multi-factor test,based on which the optimal working condition was obtained with minimum average power and maximum impact force being the primary and secondary objectives by response surface methodology.The results showed the optimal parameter setting comprised stem diameter of 22 mm,rotation speed of 2623.18 r·min^(-1)and inclination angle of 7.12°,with the maximum impact force and average power reaching 95.37 N and 165.15 W,respectively.

关 键 词：碰撞力 平均功率 锤片 转速 斜面倾角 茎秆直径 LS-DYNA 

分 类 号：S817.12[农业科学—畜牧学]