摘要
生姜收获机的结构参数、作业参数对生姜收获的损伤率有直接影响,通过对生姜的物理力学特性进行试验研究,可以为生姜收获机的结构设计和作业参数的确定提供必要的理论数据支持。选取收获期的新鲜生姜为试验测试样本,新鲜生姜块茎含水率在86%~92%之间,均值约为89%。采用Box-Behnken原理的正交旋转组合试验设计对生姜进行试验研究。试验结果表明:生姜测试样品取样位置、取样角度对生姜的抗压强度、剪切强度等力学性能的测试值影响显著,而加载速度对其影响不显著。由3D响应曲面图可知,生姜块茎的中部抗压强度最小,而底部和顶部的剪切强度更小。以抗压强度和剪切强度取最小值为条件,求解回归模型得到的最优参数为生姜的抗压强度为0.836 MPa,生姜所能承受的剪切强度为0.164 MPa。
The structural parameters and operating parameters of the ginger harvester have a direct impact on the damage rate of ginger harvesting.Through experimental research on the physical and mechanical properties of ginger,necessary theoretical data support can be provided for the structural design of the ginger harvester and the determination of operating parameters.Fresh ginger in the harvest period was selected as the test sample.The moisture content of fresh ginger tubers was between 86%and 92%,with an average of about 89%.The orthogonal rotation combination test design based on the Box-Behnken principle was used to conduct experimental research on ginger.The experimental results show that the sampling position and sampling angle of the ginger test sample have a significant effect on the test values of mechanical properties such as compressive strength and shear strength of ginger,while the loading speed has no significant effect on it.From the 3D response surface plot analysis,it can be seen that the compressive strength of the middle part of the ginger tuber is the smallest,while the shear strength of the bottom and top is even smaller.Under the condition of taking the minimum value of compressive strength and shear strength,the optimal parameters obtained by solving the regression model are that the compressive strength of ginger is 0.836 MPa and the shear strength that ginger can withstand is 0.164 MPa.
作者
徐瑞华
黄广杰
王方艳
黄新平
Xu Ruihua;Huang Guangjie;Wang Fangyan;Huang Xinping(College of Mechanical and Electrical Engineering,Qingdao Agricultural University,Qingdao,266109,China)
出处
《中国农机化学报》
北大核心
2024年第10期126-130,192,共6页
Journal of Chinese Agricultural Mechanization
基金
国家自然科学基金资助项目(52275258)
山东省重点研发计划(2019GNC106096)。
关键词
生姜
块茎
响应面
力学特性
物理特性
ginger
tuber
response surface
mechanical properties
physical properties
