林业科学Issue(11)：122-128,7.DOI:10.11707/j.1001-7488.20141117
测试木材剪切模量的自由板扭转振形法
Torsional Vibration Shape Method of Free Plate for Testing Shear Modulus of Lumber
摘要
Abstract
According to ANSYS program and optimizing principle getting at the first order torsional vibration shape function for free plate,the relation between lumber shear modulus and the first-order torsional frequency for the free plate was induced by the method of energy. The correctness of this formula was verified by the three aspects of mathematical simulation of lumber shear modulus,experimental test and static test. Transient excitation method can measure the spectrum of Sitka spruce, domestic Pinus massoniana, Pinus tabulaeformis, Cunninghamia lanceolata and Quercus mongolica wood free plates. With the aid of cross-power spectrum concept from the spectrum diagram we can identify first-order torsional frequency of free plate.关键词
自由板/扭转振形/扭转频率/频谱/剪切模量Key words
free plate/torsional vibration shape/torsional frequency/frequency spectrum/shear modulus分类
轻工纺织引用本文复制引用
王正,高子震,顾玲玲,刘斌,王亚磊,杨燕..测试木材剪切模量的自由板扭转振形法[J].林业科学,2014,(11):122-128,7.基金项目
江苏省高校优势学科建设工程项目资助( PAPD)。 （ PAPD）
