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本文简要总结、评述了结构动力反应分析中两类输入反演方法（脉冲函数法和直接时域法）的优 缺点，在此基础上通过应用文献［１］中提出的３阶显式方法，获得了一个关于结构输入反演问题的新解 法──显式直接时域法．新方法集合了脉冲函数法和直接时域法的优点，既可按显式求解动力微分方 程，又适用于非线性系统的动力反演问题．最后，通过算例对该方法进行了数值验证．
This paper briefly summarizes the advantages and disadvantages of two kinds of input inversion methods (pulse function method and direct time domain method) in structural dynamic response analysis. Based on this, by applying the third-order explicit method proposed in [1] A new solution to the problem of structural input inversion is obtained - explicit direct time-domain method. The new method combines the advantages of the pulse function method and the direct time domain method, which can not only solve the dynamic differential equation explicitly but also apply to the dynamic inversion of nonlinear systems. Finally, this method is verified by numerical examples.