直角刚架支承刚度的识别

Identification of Supporter's Stiffness of Right-angled Rigid Frame

通过实测水平放置直角刚架的固有频率 ,以传递矩阵法为基础 ,利用计算机代数系统导出以支承刚度为未知量的非线性方程组 ,求解此方程组 ,从而识别出支承刚度 ,并通过实验来验证这一方法的有效性 .

By means of measuring the natural frequencies of a horizontal right-angled rigid frame together with the transfer matrix method by computer algebraic system.The computer deduces nonlinear equation sets,which contain unknown quantity of the stiffness of supports.Thus the stiffness can be identified.The effectiveness of this method has been proved by experiments.