摘要
应用有限差分法计算了悬臂薄板横向弯曲自由振动的固有频率，建立了基本频率、泊松比和弹性模量之间的关系。探讨了横向应变和纵向应变滑板面的分布。给出了一种瞬态激振测量泊松比和基频的试验方法，推算出的弹性模量和静态结果作了比较，其结果一致。
A natural frequency of free vibration for a cantilever sheet under transversal bend loadingwas analized by finite difference method. A relationship among base frequence, Poisson ration andelastic modulus was developed. Distribution of transversal to longitudinal strain ratio on sheet surfacewas also discussed. The authors presented a testing method of Poission ratio and base frequency bymeans of instantaneous excitation vibration, and compared elastic modulus measured by dynamic andstatic testing. The results show that the two are in good agreement.
关键词
固有频率
泊松比
弹性模量
瞬态激振
有限差分法
悬臂薄板材料
natural frequency poisson ratio, elastic modulus finite difference method, instantaneousexcitation vibration.
