Basalt-fiber-reinforced epoxy (BFRE) composite laminates fabricated using the vacuum infusion process were subjected to axial compression to assess their buckling behavior. The buckling responses of open-hole specimens were compared with those of plain ones. ABAQUS finite-element predictions of BFRE composite buckling agreed well with experimental results. A validated numerical model was used to perform a parametric investigation into the effects of open-hole specimen geometry and boundary conditions of specimens on their buckling behavior. A linear analysis was carried out to estimate the effect of geometric imperfections of specimens on their buckling. Also, glass-fiber-reinforced epoxy specimens were analyzed for their buckling response and compared with that of BFRE ones. The results of this study can be used for buckling-based designs of open-hole composite structures.

中文翻译：

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真空灌注开孔单向玄武岩纤维复合材料的屈曲行为实验和数值研究

使用真空灌注工艺制造的玄武岩纤维增强环氧树脂 (BFRE) 复合层压板进行轴向压缩以评估其屈曲行为。将开孔试样的屈曲响应与普通试样的屈曲响应进行了比较。BFRE 复合材料屈曲的 ABAQUS 有限元预测与实验结果非常吻合。使用经过验证的数值模型对开孔试样几何形状和试样的边界条件对其屈曲行为的影响进行参数研究。进行线性分析以估计试样的几何缺陷对其屈曲的影响。此外，还分析了玻璃纤维增​​强环氧树脂试样的屈曲响应，并与 BFRE 试样的屈曲响应进行了比较。