复合材料三明治板和组件的冲击损伤
1Department of Mechanical Engineering, National Yunlin University of Science and Technology, 123 University Road, Sec. 3, Yunlin 64002, Taiwan.
Materials (Basel, Switzerland)
|May 14, 2025
概括
这项研究比较了,碳纤维复合材料和撞击下的三明治面板. 复合材料三明治板提供了平衡的性能,比复合材料具有更好的抗故障能力,但比单独的损坏的严重程度要低.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 影响力动态的影响力动态
背景情况:
- 合金提供柔性,而碳纤维复合材料提供高强度和耐热性.
- 三明治板将合金皮肤与复合材料核心相结合,用于轻量级,高强度的结构.
研究的目的:
- 调查和比较板,碳纤维复合层板和复合三明治板的冲击失败行为和能量吸收.
- 通过对撞击事件的实验数据验证数值模拟结果.
主要方法:
- 在不同冲击能量 (15 J,25 J,50 J) 下对三种材料 (合金板,碳纤维复合板,复合三明治板) 进行实验测试.
- 使用LS-DYNA有限元软件进行数值模拟,以模拟撞击失效和能量吸收.
- 实验和模拟数据的比较,重点关注损伤形态和力-时间曲线.
主要成果:
- 板只显示了一些痕. 碳纤维复合材料在25 J和50 J时经历了透. 三明治板比复合材料更好地抵抗故障,在较低的能量下,顶层缩和底层裂,并在50 J. 透时透.
- 碳纤维复合材料的特定能量吸收率 (SEA) 是最高的,但它们也有最大的损伤直径. 由于重量,具有最低的SEA.
- 复合材料三明治板显示中等SEA和损坏直径,平衡性能特征.
结论:
- 复合材料三明治板为抗冲击性能提供了可行的选择,在复合材料的高强度和的可塑性之间提供了妥协.
- 使用LS-DYNA进行的数值模拟准确地预测了测试材料的冲击失效行为和能量吸收特性.
- 该研究强调了在冲击场景中特定的能量吸收,损伤严重程度和物质类型之间的权衡.
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