对麦秸板弹性模量和阻尼比的动、静态法的测定与研究

Measuration and Study to Elasticity Model and Damp Ratio of the Wheat Straw Board with Dynamic and Static Testing Method

弹性模量E和阻尼比ξ是衡量麦秸板材料物理力学性能的两个重要指标。由于表征动态系统的两个关键动态特征参数为阻尼比ξ和固有频率ωn,为此本文主要运用动态测试法测定麦秸板的纵向弹性模量值E及其阻尼比值ξ,并与静态法试验结果进行比较。

Elasticity model E and damp ratio ξ are two important indexs to scale the physical mechanics properties of the wheat straw board. Owing to damp ratio ξ and inherence frequence ωn symbol two key factors on dynamic system, therefor the thesis main took advantage of dynamic testing method and measured respectively elasticity model E, as well as damp ratio ξ in its vertical orientation, which compared with the result of static testing method.