音板声学品质的主要影响因子及其评测方法  

The Main Factors Affecting Acoustic Quality of Soundboard and the Methods to Evaluate the Acoustic Quality of Soundboard

作　　者：雷福娟[1,2] 黄腾华 陈桂丹[1,2] 

机构地区：[1]广西壮族自治区林业科学研究院 [2]广西壮族自治区林产品质量检验检测中心,南宁530002

出　　处：《陕西林业科技》2017年第5期85-89,94,共6页Shaanxi Forest Science and Technology

摘　　要：本文综述分析了实木音板声学品质主要影响因素—木材声振动特性、音板结构及加工工艺等,以及与木材声振动特性密切相关的木材密度、含水率、S2层微纤丝角、纤维素结晶度、年轮宽度、晚材率及其变异系数等参数。在此基础上介绍了评选优质原料、设计合理音板结构、控制制作工艺等控制音板声学品质的途径来,分析了音板声学品质传统主观经验判断评测方法的缺点,提出了模态试验分析法和基于ANSYS有限元评测法两种客观的评测方法及其重点研究方向,有利于研究和建立科学客观的音板声学品质评测系统。This paper summarizes the main factors affecting the wood soundboard acoustic quality：wood acoustic vibration property,soundboard structure and processing technology etc..and the parameters related to acoustic vibration property like density,moisture content,S2 layer of microfibril angle,cellulose crystallinity,ring width,latewood percentage and variation coefficient.Based on that,the approaches to controlling the soundboard acoustical quality regarding the selection of highquality raw materials and reasonable design of the soundboard structure and the manufacturing process etc.were introduced.The shortcomings of traditional soundboard acoustical quality judgment evaluation method by subjective experience were analyzed and two objective evaluation methods like modal test analysis and finite element evaluation based on ANSYS were put forward.

关 键 词：木材声振动 音板 声学品质 评测 方法 

分 类 号：S781.3[农业科学—木材科学与技术]