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요약정보
树冠结构与树木固有特性的关系研究
Resource Type
Academic Journal
Authors
林欢
;
孙磊厚
;
王二化
Source
江苏农业科学 / Jiangsu Agricultural Sciences
. 49(20):166-171
Subject
树冠;形态结构;固有特性;固有频率;阻尼比
Language
Chinese
ISSN
1002-1302
Online Access
Find it @ DONGA
초록
为了研究树冠结构形态与树木振动特性之间的关系,在室内选择3个榉树主干和10个树冠构成新的样品树,采用绳拉法测试其固有特性,同时在室外进行试验验证.结果表明,树冠对样品树的质量分布具有显著影响,能够快速降低其固有频率,但是对阻尼比的影响较小.当振幅较小时,树叶质量对样品树固有频率的影响并不显著,树木主要还是依靠树枝来耗散振动能量.单独主干及带叶树冠样品树的固有频率与样品树的总质量之间均存在二次函数关系,而去叶树冠样品树的固有频率与样品树的总质量之间存在三次函数关系.
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