Critical values of the pressure leading to self-contact in a flexible and inextensible loop subjected to uniform hydrostatic pressure have been predicted using variants and approximations of the harmonic balance method. Moreover, a modified perturbation method has been employed that has shown some advantages over conventional perturbation approach to the problem. A comprehensive comparison is made between the results we obtained using various techniques and the existing reported results for different pressure loadings and rotational symmetries.

中文翻译：

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均匀静水压力下柔性回路的自接触

已经使用谐波平衡方法的变体和近似值预测了导致在柔性且不可伸展的环路中受到均匀静水压力的自接触压力的临界值。此外，已经采用了改进的摄动方法，该方法在解决该问题方面显示出优于常规摄动方法的一些优点。我们使用各种技术获得的结果与现有报道的针对不同压力负载和旋转对称性的结果之间进行了全面比较。