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运用傅立叶变换和留数理论得到了变速移动荷载下无限长Winkler梁稳态动力响应的解析表达式。与Kenney的经典解求解过程相比,文中给出的求解过程具有更加明确的物理意义。进一步探讨了阻尼在求解过程中的作用,并指出了经典解在处理阻尼时存在的问题。
The analytical expression of the steady-state dynamic response of an infinitely long Winkler beam under variable speed moving loads is obtained by using the Fourier transform theory and the residue theory. Compared with Kenney’s classical solution process, the solution given in this paper has a more explicit physical meaning. The role of damping in the solution process is further discussed, and the problems existing in the classical damping solution are pointed out.