关键词: 生姜, 块茎, 响应面, 力学特性, 物理特性

Abstract: 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.

Key words: ginger, tuber, response surface, mechanical properties, physical properties