Effects of force direction and loading speed on seed mechanical properties of Allium chinense
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    Abstract:

    A texture analyzer was used to conduct the compression and shearing tests on the lateral X axis,lateral Y axis and longitudinal Z axis of Allium chinense seed to explore the effects of force directions and loading speed on the seed mechanical properties of Allium chinense. The results showed that the compression limit loading range of Allium chinense seed in X,Y and Z directions was 89.20-139.20,120.70-294.70 and 101.40-184.60 N,respectively. The compression shear test of Allium chinense seed was conducted at the loading speed of 20,40,60,80,and 100 mm/min. The average elastic modulus of Allium chinense seed under different loading speeds was 1.65,1.07,1.89,2.01,1.85 MPa,and the average elastic modulus of Allium chinese seed in X,Y and Z directions was 2.65,1.30 and 1.13 MPa,respectively. The mean cutting force of Allium chinense seed at different loading speeds was 20.05,12.74,11.23,14.02,16.72 N,respectively. The mean cutting force of Allium chinense seed in X,Y and Z directions was 11.06,18.07,15.73 N,respectively. The minimum cutting force of Allium chinense seed was 6.12 N.It is indicated that the force direction and loading speed have significant effects on the ultimate load,elastic modulus and cutting force. The anti-extrusion and anti-shear ability of Allium chinense seed in y direction was good. It will provide reference for studying the sowing,harvesting,transportation of Allium chinense and designing the machine and tool for Allium chinense.

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康启新,张国忠,郑侃,鄢钱,刘浩,陈亚欣. Effects of force direction and loading speed on seed mechanical properties of Allium chinense[J]. Jorunal of Huazhong Agricultural University,2021,40(4):231-238.

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History
  • Received:April 26,2021
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  • Online: July 22,2021
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