Abstract In this comment mathematical formulations concerning the nonlinear beam model published in [1] are analysed. The beam is subjected to vertical and axial loading (at its right end). This model can be especially used to study post-buckling problems, but in this paper we focus only on convex cases. However, some inconsistency between properties of bending problems and their convexity bounds was discovered by the authors of this comment. This is concerned with definition of an integral constant, which is in [1] not strictly determined, only later in [3]. In this comment there is proposed an alternative definition of this constant which should solve the mentioned discrepancy. Except this one, no in-depth revision of the considered beam model is intended here.

中文翻译：

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评DY Gao开发的大变形弹性梁模型

摘要 在这篇评论中，分析了[1] 中发表的非线性梁模型的数学公式。梁承受垂直和轴向载荷（在其右端）。该模型特别适用于研究屈曲后问题，但在本文中我们只关注凸情况。然而，该评论的作者发现弯曲问题的性质与其凸性边界之间存在一些不一致。这与积分常数的定义有关，在[1]中没有严格确定，只有在[3]后面。在此评论中，提出了该常数的替代定义，可以解决上述差异。除此以外，此处不打算对所考虑的梁模型进行深入修订。