为了解冲击力对苹果品质的影响,本文利用简易落球冲击实验平台,针对苹果不同部位对冲击力的敏感性、不同冲击力对敏感部位的损伤和苹果的大小对损伤程度的影响进行了系统的研究。通过分析发现:苹果损伤最敏感部位位于苹果的侧面;冲击力越大,苹果损伤最敏感部位的损伤程度也越大;苹果损伤程度与苹果大小无关。研究结果一方面可使学生能够对传统的物理试验——落体运动加深理解,提高其利用所学知识分析问题和解决问题的能力,另外一方面可为果农在苹果的采摘、运输、贮藏过程中采用科学方法,减少其损耗提供一定的科学依据。
In order to understand the impact force on the quality of apple, by using the simple impact test platform of drop ball, we have been studied systematically the three problems in this paper, that are the sensitivity of different parts of apple to impact force, the damage of different impact force on sensitive parts and the impact of the size of apple on the degree of damage. Through the analysis, it is found that the most sensitive damage part is located on the side of apple; the greater the impact force is, the greater the damage degree of the most damage sensitive part is; the damage degree is not related to the size of apple. These results can make students understand deeply the traditional physical experiment that is falling movement, and improve their ability to analyze and solve problems by using the knowledge they have learned. On the other hand, it can provide certain scientific basis for farmers to adopt scientific methods in the process of apple picking, trans-portation and storage, so as to reduce their losses.
References
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K. Peleg, 董务民, 钱民全. 水果和蔬菜的生物力学[J]. 力学进展, 1987, 17(1): 101-109.