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Application of the homotopy perturbation method for the large deflection problem of a circular plate

机译:同伦摄动法在圆板大挠度问题中的应用

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摘要

A moderate improvement of the standard homotopy perturbation method is given and applied to the large deflection problem of a uniformly loaded circular plate with edge simply supported and fastened. Compared with the general homotopy perturbation method, there are two innovations in our method. On the one hand, the homotopy equations are constructed based on part of equations instead of all equations of the system. On the other hand, a parameter in the system is expanded to finite terms which have more freedom to be selected and it can be used to adjust the accuracy of the approximate solutions. More accurate solutions for the large deflection problem are obtained by the proposed method. The error comparisons with classical perturbation solutions show the efficiency and convenience of the proposed homotopy perturbation method.
机译:给出了对标准同伦摄动法的适度改进,并将其应用于均匀支撑的圆形板的大挠度问题,该圆形板的边缘简单地支撑和固定。与一般的同伦摄动方法相比,我们的方法有两个创新。一方面,同构方程是根据部分方程而不是系统的所有方程构造的。另一方面,系统中的参数被扩展为有限项,这些项具有更多的自由选择权,并且可以用于调整近似解的精度。通过提出的方法,可以得到较大挠度问题的更精确解。与经典摄动解的误差比较显示了所提出的同伦摄动方法的效率和便利性。

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