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复合材料机翼整体成型技术研究

, PP. 185-191

Keywords: 复合材料机翼,有限元,石蜡芯模,气囊法成型,三点弯曲,局部屈曲

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Abstract:

对给定外型与尺寸的整体成型复合材料机翼进行了设计、制备及力学性能实验研究。采用有限元分析软件,对空心复合材料机翼进行静力学分析,得到了承载效率与机翼几何尺寸的关系,并确定了最优结构尺寸与复合材料纤维铺层厚度。采用石蜡芯模辅助气囊法成型技术,制备了整体成型复合材料机翼,并进行了三点弯曲实验测定,分析了其破坏机制。三点弯曲实验研究发现,整体成型复合材料机翼的破坏模式为上蒙皮的局部屈曲失效,屈曲后仍有一定的承载能力。

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