关键词: 西瓜, 碰撞参数, 跌落高度, 机械损伤

Abstract: [Objective] The objective of the study was to study the impact mechanical characteristics and correlation between damage and each impact factors based on a experimental drop test of watermelon under the different factors. [Method] The ‘Xinong eight’ watermelon in Hohhot Helingeer and Inner Mongolia were used in the study. The effects of materials, drop height, watermelon quality and collision material layers on peak value of impact acceleration and maximum deformation amount of impact parameters were examined. [Results] Drop height and watermelon quality had a significant effect on peak ground acceleration. Drop height was correlated negatively with the peak value of impact acceler-ation and watermelon quality was negatively correlated with the peak value of impact acceleration. Cor-rugated paper buffering capacity was better than mesh polyethylene foam. The buffer capacity of impact material was negatively correlated with the peak value of impact acceleration and the maximum shape variables. [Conclusion] Drop height and watermelon quality had significant effects on the mechanical properties and the correlation coefficient R² of between the mechanical characteristics or damage and fall height or watermelon quality were larger than 0.972.

Key words: watermelon, impact parameters, drop height, mechanical damage