摘要
用应力波的方法建立一维木材动弹模量的色散关系方程,并测量和分析了两种木质材料的动弹模量与频率的色散关系。在纵振动过程中,两种木材的动弹模量随着频率的增大而增大,而耗散因子随着频率的增大而减少。
This paper deals with the method of stress wave to measure the elastic modulus, loss modulus and their dispersion relationships against frequency of materials. By means of modulus measurements of two kinds of timber, when the frequency of vibration is higher than the base frequency, the elastic modulus is increased with frequencies; but the loss modulus decreases with frequencies.
出处
《南京林业大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第1期131-134,共4页
Journal of Nanjing Forestry University：Natural Sciences Edition
基金
国家自然科学基金资助项目(30671651)
关键词
木质材料
动弹模量
耗散因子
色散
应力波
Timber
Dynamic modulus
Dissipation factor
Dispersion
Stress wave
