古筝琴板的振动特性初探研究  

Preliminary Study on the Vibration Characteristics of Guzheng Board

作　　者：嵇建书 裴永超 罗敏 卢晓杰 郑梅生[1] JI Jian-shu;PEI Yong-chao;LUO Min;LU Xiao-jie;ZHENG Mei-sheng(College of Mechanical Electronic Engineering,Nanjing Forestry University,Nanjing 210037,Jiangsu,P.R.China)

机构地区：[1]南京林业大学机械电子工程学院,江苏南京210037

出　　处：《林产工业》2021年第6期34-40,共7页China Forest Products Industry

基　　金：大学生实践创新训练计划项目“古筝琴板琴弦固有频率测试台”(2019NFUSPITP0185);国家自然科学基金(31872697)。

摘　　要：木质乐器的好坏与木质板材的振动特性有着密切关系。以古筝为例,对琴板振动特性进行了理论分析与试验研究。分析了板的弯曲和扭转振动理论,得出琴板扭转和弯曲振动的固有频率值;通过自由振动试验和弯曲与扭转振动模态试验,得到琴板的自由振动时域图和频谱图及其弯曲振型和扭转振型图;通过理论分析与试验结果对比,验证了古筝琴板振动特性试验方法与结果的有效性,为古筝琴板及其他乐器木质板材的筛选与生产提供了一种有效的科学手段。There was a close relationship between the quality of wooden musical instrument and the vibration characteristics of wooden board.In this paper,taking Guzheng as an example,the theoretical analysis and experimental research on the vibration characteristics of its board were carried out.Then,the free vibration experiment and the modal experiment of the bending and torsion vibration were conducted,and the free vibration time domain and frequency spectrum were obtained.Finally,the theoretical analysis was compared with the experimental results.By comparison,the validity of the experimental method and the experimental results for the vibration characteristics of the Guzheng board were verified,so it provided an effective scientific method for the selection of Guzheng board and other musical instrument wooden board.

关 键 词：木材 乐器 古筝琴板 振动特性 声学研究 

分 类 号：TS611[轻工技术与工程]