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该文对玻璃纤维增强环氧树脂基复合材料(E-GFRP)进行了材料性能试验,获得了该材料的力学性能参数;在此基础上,对12组共36根该材料制成的受压圆管试件进行了轴心受压稳定性试验研究,探讨了复合材料受压圆管试件稳定性承载力规律和破坏特征,并依此提出一种改进的Perry-Robertson稳定性计算公式,通过与传统稳定性验算公式进行对比,结果表明,改进Perry-Robertson公式与试验结果更为接近,能够较好地预测复合材料轴压管件的极限荷载,期望为复合材料稳定性设计理论提供有价值的参考意见。
In this paper, the glass fiber reinforced epoxy resin-based composite material (E-GFRP) was tested on the material properties obtained mechanical properties of the material parameters; on this basis, a total of 12 groups of 12 made of the material under pressure The stability test of the circular tube specimen under axial compression was carried out. The stability and failure characteristics of the circular tube specimens under compression were discussed. Based on this, an improved Perry-Robertson stability calculation formula was proposed, The results show that the modified Perry-Robertson formula is closer to the experimental result and can predict the ultimate load of the composite axial compression pipe fittings better. It is expected that the Perry-Robertson formula will provide valuable information for the design theory of composite stability The reference opinion.