Abstract

This paper aims to develop a closed-form semi-empirical formula for predicting the buckling load of simply supported and clamped supported composite panels with a circular cutout subjected to uniaxial and biaxial load conditions. The finite element method (FEM) was used to develop and validate the semi-empirical equation. The effective moduli approach for lumping layers was used to transform the laminated panels to anisotropic panels. The proposed semi-empirical formula was developed as a function with respect to panel dimensions and material properties. The results of the presented formula were found to compare reasonably well with finite element (FE) analysis results and available results from the literature.

摘要

本文旨在开发一种封闭式半经验公式，用于预测单轴和双轴载荷条件下具有圆形切口的简支和夹紧支撑复合板的屈曲载荷。有限元法（FEM）用于开发和验证半经验方程。集总层的有效模量方法用于将层压板转换为各向异性板。所提出的半经验公式是作为关于面板尺寸和材料特性的函数而开发的。发现所提出的公式的结果与有限元 (FE) 分析结果和文献中的可用结果进行了相当好的比较。