糖用甜菜叶的几何与物理特性研究  

Study on Geometric and Physical Characteristics of Sugar Beet Leaves

作　　者：张钦 王方艳[1] 张振宇 贾松涛 Zhang Qin;Wang Fangyan;Zhang Zhenyu;Jia Songtao(College of Mechanical and Electrical Engineering,Qingdao Agricultural University,Qingdao 266109,China)

机构地区：[1]青岛农业大学机电工程学院,山东青岛266109

出　　处：《农机化研究》2022年第12期182-186,191,共6页Journal of Agricultural Mechanization Research

基　　金：国家重点研发计划项目(2016YFD0701200);国家自然科学基金项目(51505246,51775290)。

摘　　要：研究甜菜叶的生长范围、几何参数及力学特性,可为甜菜切顶等机械装备研究提供数据支撑。为此,以内糖(ND)38、甘糖7号、德甜308甜菜叶为研究对象,确定甜菜叶的生长范围及几何尺寸。以德甜308成熟叶片叶柄为试验样本,观察甜菜叶柄的组织结构,确定了叶柄为多孔、筛状、不均匀的复合材料。进行对甜菜叶柄上、中、下3个部位的拉伸、剪切试验,结果表明:甜菜叶柄整体近似为脆性材料,叶柄上、中、下、部的平均抗拉强度分别为0.846、0.947、0.820MPa,剪切强度为0.71、0.74、0.65MPa。试验结果可为建立甜菜叶柄的力学模型、甜菜除叶装置的结构设计提供指导。The growth range,geometric parameters and mechanical properties of sugar beet leaves were studied to provide data support for the research of mechanical equipment such as beet top cutting.The sugarbeet leaves of Neitang(ND)38,Gantang 7 and Detian 308 were studied to determine the growth range and geometric size of sugarbeet leaves.The structure of sugarbeet petiole was observed by using Detian 308 sugarbeet petiole as the test sample.The petiole was porous,sieve-like and uneven composite material.The tensile and shear tests on three parts of sugarbeet petiole showed that sugarbeet petiole was approximately brittle material.The average tensile strength of the upper,middle and lower parts of the petiole were 0.846,0.947,0.820MPa,shear strength were 0.71,0.74,0.65MPa.The test results can provide guidance for establishing the mechanical model of sugar beet petiole and the structural design of sugar beet defoliation device.

关 键 词：甜菜叶 几何特征 物理特性 剪切强度 

分 类 号：S183[农业科学—农业基础科学]