Abstract
Mechanical properties of the tobacco main veins are basic parameters for the design of tobacco leaves harvester. And the compressive elastic modulus and Poisson’s ratio of tobacco main veins are related to the contact force between the tobacco leaves and the harvesting tool, which is an important design parameter for tobacco leaves harvester. In this work, lateral compression tests were carried out on tobacco main veins. And the force-displacement equation during lateral compression was derived based on the Hertz contact theory. Then the compressive elastic modulus and Poisson’s ratio were obtained by the method of piecewise nonlinear fitting. The fitting results of Poisson’s ratio are in the range of 0.33 to 0.56. The fitting results of the compressive elastic modulus are in the range of 1.30MPa to 3.07MPa. And the compressive elastic modulus increases with the increase of strain.
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