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Identification of characteristics of a functionally graded isotropic cylinder

机译:鉴定功能梯度各向同性圆柱的特性

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On the basis of the general problem formulation for an inhomogeneous isotropic body, the problems of steady-state longitudinal-radial and torsional vibrations of a cylinder are considered. The Lame parameters and the density are variable in radial coordinate. The inverse coefficient problem on determining the laws of variation of cylinder's properties from the data on the amplitude-frequency characteristics specified at different frequency ranges is studied. The numerical solution is constructed by using a three-stage iterative process based on the derived systems of the Fredholm integral equations of the first kind with smooth kernels with respect to the unknown corrections; the A.N. Tikhonov regularization method is employed to solve these equations. The reconstruction examples for monotonic laws are presented.
机译:基于对不均匀各向同性体内的一般问题制剂,考虑了稳态纵向径向和圆柱扭转振动的问题。 跛足参数和密度在径向坐标中是可变的。 研究了关于从不同频率范围指定的幅度频率特性的数据确定气缸性能变化规律的逆系数问题。 通过使用基于第一种的Fredholm积分方程的衍生系统的三级迭代过程来构造数值解决方案,其具有相对于未知校正的光滑核的第一类的衍生系统; A.N. 采用Tikhonov规则化方法来解决这些方程。 提出了单调法的重建例。

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