Study on Mechanical Properties of Compression and Cutting of Taro

To understand taro cutting and compression mechanical properties of test samples for Shandong eddoes，using TMS-PRO food property analyzer for taro compression test samples，parameters such as taro failure strain and modulus of elasticity were calculated.Using customized tools，cutting experiments of taro were carried out under conditions of different cutting thickness，different cutting edge angle and different sliding cutting angle.The maximum cutting force in cutting process was measured，and change law was analyzed by SPSS software.The failure strain，compressive strength and elastic modulus of taro samples were 0.314，1.490 MPa and 4.751MPa respectively.The maximum cutting force increased with increase of cutting thickness，and increased slowly when cutting thickness was greater than 3 mm.The maximum cutting force increased with increase of tool edge angle.The maximum cutting force decreased significantly with increase of tool slip angle.Through variance analysis of interaction test results，it was concluded that cutting thickness，cutting edge angle and sliding cutting angle all had significant effects on maximum cutting force of taro，and interaction between cutting thickness and tool edge angle and interaction between cutting thickness and tool sliding cutting angle also had significant effects.Experimental results could provide theoretical basis for design and manufacture of taro harvesting and processing machinery.