分析研究了失谐周期多跨加肋板结构中的弹性波一维局部化问题。采用传递矩阵方法给出了系统的传递矩阵 ,并采用 Wolf提出的计算连续型动力系统中 Lyapunov指数的方法 ,给出了局部化因子的计算表达式。作为算例 ,给出了失谐加肋板结构中局部化因子的数值结果 ,并分析了跨长的失谐程度及结构参数对弹性波局部化的影响 The problem of one-dimensional localization of elastic wave in multi-span and stiffened plates with detuning period is analyzed. The transfer matrices of the system are given by using the transfer matrix method. The Lyapunov exponents of continuous dynamical systems proposed by Wolf are also given. The expressions of the localization factors are given. As an example, the numerical results of the localization factor in the detuning plus rib structure are given, and the influence of the length of detuning and the structural parameters on the elastic wave localization