Abstract
In this study,the mechanical properties of three varieties of cerasus humilis at different temperatures were systematically investigated by whole fruit puncture test, exocarp uniaxial tensile test and mesocarp uniaxial compression test.It was found that puncture test could not only reflect the shear mechanics of the exocarp in vivo at the tissue level, but also characterize the resistance level of fruit to puncture damage at the macro level.The environmental temperature had significant negative and positive effects on puncture failure stress and puncture failure deformation of cerasus humilis (p<0.05).The stress and elastic modulus of exocarp tension and mesocarp compression were significantly affected by ambient temperature (p<0.05).This study combined with temperature change to study the mechanical properties of cerasus humilis provides a necessary theoretical basis for the prediction of fruit damage and the development of postharvest treatment equipment.
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