大曲率下单向复合材料的拉伸承载结构初设计

来源 :第二届中国国际复合材料科技大会 (CCCM-2) | 被引量 : 0次 | 上传用户：xiang879154

【摘要】

：

　　碳纤维复合材料(CFRP)具有质轻高强的特点已作为承力结构被应用到各行各业，而大曲率下的拉伸承载问题的研究却很少.本文初步设计了圆棒和矩形两种截面的复合材料承载相结

【作者】

：

李宏福;张彦飞;李会民;张博明;

【机构】

：

北京航空航天大学材料科学与工程学院,北京100191

【出处】

：

第二届中国国际复合材料科技大会 (CCCM-2)

【发表日期】

：

2015年期

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　　碳纤维复合材料(CFRP)具有质轻高强的特点已作为承力结构被应用到各行各业，而大曲率下的拉伸承载问题的研究却很少.本文初步设计了圆棒和矩形两种截面的复合材料承载相结构，利用TPU的挤出涂覆工艺对其中的矩形承载形式又进行了单层单列、单层双列、单列两层和单列四层几种结构的设计和制备，并对5种结构的拉伸、弯曲行为进行了模拟、测试和对比试验，结果表明：模拟计算和实验测试具有良好的一致性；相同层数时，弯曲破坏力值随CFRP片材数增加而成倍增加，但弯曲破坏直径相近；层数增加，弯曲破坏直径直线增加，且弯曲承载的比强度降低；半层间距b越小其曳引带越容易弯曲，半列间距a的最佳取值是1mm.180℃预热1min比250℃预热10s更适合改善TPU与CFRP的界面粘结.

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大曲率下单向复合材料的拉伸承载结构初设计

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