果树振动力学模型分析与油茶枝干广义坐标系建立

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中图分类号：S66；TH113 文献标识码：A 文章编号：2095-2953（2025）02-0070-05

Mechanics Vibration Model of Fruit Tree Analysis and Generalized Coordinate System Establishment for Camellia Oleifera branches

LI Zhi-ru 1，2 ， ZHOU Jian-bo 1，2 *， WU Xiao-feng 1，2 ， LI Quan-gang 1，2 ， ZHANG Bei-hang 1，2 TONG Lin 1，2 ， HAN Li-zhi 1，2 ， HU Jing-yang 1，2 ， LI Xu-hou 1，2 （204号

（1.HarbinReachsiteofestrycryalestrdndstratioHrboga; 2.ForestryEqnteteoaltdsstratioHaboa

Abstract：In view of the complexityshape of Camellia Oleifera，large individual diffrences，simultaneous fruits and flowers，and thelocationofflowersand fruitsarenotfixed，which makes itdificult toestablishamechanical model. Based onthecomprehensive analysis of the existing mechanical model of fruit trees under forced vibration，the generalized coordinate system of spatial morphologyofcamellacamellia tree was established by applying the concentrated mass method：Firstly，conditional assumptions and boundary conditions are established.Ignoring the efectsof wind field，geomagnetic field and geomagnetic field，the trunk and branches are regarded as acontinuous system with uniform andcontinuous distribution of physical parameters，and the forceand deformation in vibration obey Hooke's law. The absolute coordinate system （x，y，z） ，main coordinate system ，branch coordinate system at all levels （xn，yn，zn） and flower and fruit coordinate system （λXi+1，λyi+1，λZi+1） of Camellia Oleifera were established，and the branches，flowersand fruitsof diferent planes in space were converted into the same cordinate system through cordinate translationand coordinate rotation.Itlaysa foundation for the subsequent staticsanalysis and dynamics model establishment.

Key Words：Mechanical Vibration Harvesting;Dynamic Model; Energy Transfer; Coordinate Transformation

振动采收技术在国内外坚果、水果采收中较常用[1-4]。（剩余6456字）