基于等效弹性模量的饲料制粒机环模设计方法  

Design Method of Ring Die in the Feed Pellet Mill Based on Equivalent Elastic Modulus

作　　者：李艳聪[1] 宋欣[1] 李书环[1] 万志生 

机构地区：[1]天津农学院机电工程系,天津300384 [2]天津市世昌科技发展有限公司,天津301508

出　　处：《农机化研究》2011年第11期79-82,共4页Journal of Agricultural Mechanization Research

基　　金：天津市科技支撑项目(10ZHXHNC08900)

摘　　要：给出了环模受力的解析表达,定义了环模的等效弹性模量,实验验证了等效弹性模量的有效性。研究得出了环模应力、应变与弹性模量之间的关系。从等效弹性模量出发对现有直径420mm虾料环模进行了有限元分析,在此基础上进行了结构优化。优化后的环模在保证强度的前提下,比原型环模多打孔4 136个,提高开孔率23%。Ring die is a key component in feed mill machine,the hole drilling rate affects the efficiency of the pellet production.In this paper,force of the ring die is analyzed;the equivalent elastic modulus of ring die is defined and verified.The relation among the stress,strain and elastic modulus is also obtained.The equivalent elastic modulus is applied to FEM analysis of shrimp feed ring die which diameter is 420mm.According to the analysis results,a structural optimal scheme of the ring die that drilled more 4136 holes than the original structure is obtained.The results show that the open porosity of ring die can be increased 23% with the guaranteed strength.

关 键 词：环模 等效弹性模量 应力 应变 

分 类 号：S817.1[农业科学—畜牧学]