Authors

Abstract

This study uses high-speed photography to reproduce the vibration behavior of Camellia oleifera fruit and flower buds. Vibration energy is transmitted through the branches to break the balance of the Camellia oleifera branch system, causing the fruit and flower buds to exhibit anisotropic chaotic swings. Post-processing of images shows that the fruit detachment force ranges from 4.57 to 11.85 N, and the flower bud detachment force ranges from 0.68 to 3.24 N. At a vibration frequency of 12.98 Hz, the vibration amplitude has no significant effect on the detachment force of fruit and flower buds. The detachment time of Camellia oleifera fruit and flower buds decreases with the increase of vibration amplitude or excitation frequency. Through fitting and analysis of the collected data, the Fourier fitting curves and functions of the motion acceleration of oil-tea fruit and flower buds are obtained, with R² values of 0.83996 and 0.73718, respectively.

Abstract in Chinese

通过高速摄影还原油茶果实与花苞振动行为，振动能量经枝干传递打破枝条系统平衡，使其呈各向异性混沌摆动。后处理影像显示，果实脱落力4.57~11.85N、花苞0.68~3.24N，12.98Hz振动下幅值对脱落力影响不明显，脱落时间随幅值或频率增加而减少。经数据拟合，得果实、花苞运动加速度傅里叶拟合曲线及函数，R²分别为0.83996、0.73718。