农业物料动态力学特性的试验研究  

Research on Dynamic Characteristic of Agricultural Material

作　　者：杨晨升[1] 马小愚[2] 

机构地区：[1]黑龙江科技学院机械工程学院,哈尔滨150027 [2]东北农业大学工程学院,哈尔滨150030

出　　处：《农机化研究》2009年第4期123-125,共3页Journal of Agricultural Mechanization Research

基　　金：黑龙江科技学院引进高层次人才科研启动基金项目(07-31)

摘　　要：研究了完整马铃薯试样在40～210Hz频率范围内的动特性,由Hertz接触理论推导出完整马铃薯的动态平行平板挤压方程;采用图像分析方法较精确地获得物料与压头的接触点的主曲率半径;进行了马铃薯的平行平板动态挤压试验,得到了完整马铃薯绝对动模量、损失角以及完整马铃薯绝对动模量随频率的变化规律,从而为马铃薯的收获、加工、在线分级、品质评价和无损检测等提供一定的理论基础。This article studies the dynamic mechanics characteristics of integrity potato sample within me frequencies 40-210 Hz. The integrity potato dynamic parallel plate compress equation was derived by Hertz contect theory, and get the principal curvature radius between material and plate exactly by image analysis, dynamic parallel plate compress experi- ment was carried , some dynamic property parameters such as absolute dynamic modulus and loss angle of integrity potato, change rule between potato absolute dynamic modulus and exciting frequencies. The research results of this paper can apply basic document dates to potato harvesting, processing, quality evaluation, sorting online, non - destructive inspection.

关 键 词：农业物料 HERTZ接触理论 动态特性 基础参数 

分 类 号：S121[农业科学—农业基础科学]