工艺与制造英文2022被引 17
玻纤片增强的单螺栓穿孔拉挤玻纤增强复合材料型材连接的承销强度
Pin‐bearing connection strength of single‐bolted pultruded glass fiber‐reinforced polymer profiles strengthened by glass fiber sheet
Phan Viet Nhut, Tran Quang Duc, Yukihiro Matsumoto · Toyohashi University of Technology
摘要整理
本研究旨在探究玻纤片（GFS）增强的单螺栓拉挤玻纤增强复合材料（PGFRP）连接在承销条件下的极限载荷和失效模式。共研究了144个不同几何参数的GFRP螺栓连接试件，其中端距与螺栓直径比（e/d=2、3、4）和板宽与螺栓直径比（w/d=2、3、4、5）变化范围广泛。采用真空辅助树脂传递模塑（VaRTM）工艺制备了三种类型的玻纤片：0°/90°定向玻纤片、±45°定向玻纤片和无向玻纤毡，用于增强连接。研究结果表明，三种玻纤片均能有效提高连接的极限载荷。随着e/d比值的增加，所有类型玻纤片的增强效果均呈下降趋势。此外，建立了理论预测方程，可以高精度预测玻纤片增强型单螺栓PGFRP连接的极限载荷和失效模式，偏差小于12%。研究成果为复合材料螺栓连接的设计和优化提供了重要参考。
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