Abstract Mechanized coffee harvesting is performed by machines that use the principle of mechanical vibration to detach the fruit. In this type of harvest, the machines transmit kinetic energy to the plant. Numerical simulations attached to representative models have been shown to be a viable tool for understanding the coffee harvesting process. In this sense, this study aimed to evaluate the dynamic behavior of coffee plants. For this purpose, a previously developed coffee plant model was used in numerical simulations to extract the modal properties and thus enable a better understanding of the dynamic behavior of coffee plants. The frequencies extracted from the simulations were validated with frequencies observed in laboratory tests. The frequencies found in the laboratory tests were concentrated between 10 Hz and 30 Hz. The validation of the model indicated that there is a correlation between the studied variables.

中文翻译：

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通过数值模拟咖啡植物的模态特性

摘要 机械化咖啡收获是由利用机械振动原理分离果实的机器完成的。在这种类型的收获中，机器将动能传递给植物。附加到代表性模型的数值模拟已被证明是了解咖啡收获过程的可行工具。从这个意义上说，本研究旨在评估咖啡植物的动态行为。为此，在数值模拟中使用了先前开发的咖啡植物模型来提取模态属性，从而更好地了解咖啡植物的动态行为。从模拟中提取的频率与实验室测试中观察到的频率进行了验证。实验室测试中发现的频率集中在 10 Hz 和 30 Hz 之间。