3D打印的蜂芯对混合能量吸收器的压缩性能的影响:实验测试和优化分析分析
Rita de Cássia Silva1,2, Gabriel Martins de Castro2, Alessandro Borges de Sousa Oliveira1
1Department of Automotive Engineering, Group of Modeling and Simulation of Vehicle Systems, Gama College, University of Brasilia (UnB), Brasilia 72444-240, Brazil.
Materials (Basel, Switzerland)
|January 26, 2024
概括
本研究介绍了使用金属管内3D打印的聚合物蜂巢的混合能量吸收器. 这些新型结构在高速冲击期间显著提高了能量吸收和结构效率.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 冲击力学 冲击力学
背景情况:
- 能量吸收器对于减轻冲击力的作用至关重要.
- 通常使用的是薄壁金属结构,但聚合物芯具有提高性能的潜力.
- 带窗的金属管和3D打印的聚合物蜂巢的组合用于冲击吸收是新的.
研究的目的:
- 为了研究由3D打印的聚合物蜂巢填充的有窗的金属管组成的混合能量吸收器的有效性.
- 分析不同窗口尺寸和聚合物类型 (PET-G,ABS) 对能量吸收能力的影响.
- 优化几何和材料,以提高轴承负载下的性能.
主要方法:
- 使用薄壁金属管和3D打印的六角蜂巢 (PET-G,ABS) 构建混合物标本.
- 在离平面外的近静态轴承负荷下对标本进行实验测试.
- 使用专用软件应用优化程序来确定最佳的窗口几何和聚合物类型.
主要成果:
- 与未填充的样本相比,聚合物芯显著改善了能量吸收 (E),负载率 (LR) 和结构效率 (η).
- 优化确定了一个理想的窗口几何形状 (16.4 × 20 mm2) 和ABS作为最佳的聚合物.
- 经过验证的优化样本展示了与优化预测一致的性能.
结论:
- 带有3D打印的聚合物蜂巢的混合能量吸收器提供了卓越的冲击能量消耗.
- 优化几何和材料选择 (ABS) 对于最大限度地提高性能至关重要.
- 这种方法为开发先进的减轻影响系统提供了一个有前途的战略.
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