粘性弹性蜂结构,增加了能量吸收和形状恢复性能,使用扣扣启动器
Colleen M Murray1, Min Mao1, Jungjin Park1
1Composites Research Laboratory, Department of Aerospace Engineering, University of Maryland, College Park, MD 20742, USA.
Polymers
|August 26, 2023
概括
附加制造的TPE蜂带有曲启动器显著提高了防撞性能. 这些能量吸收材料在多个压缩周期中表现出增强的压缩效率和耐用性,性能优于没有启动器的材料.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 吸能材料对于航空航天和汽车行业的安全至关重要.
- 管状结构中的曲启动器通过促进受控的折叠来增强能量吸收.
- 附加制造的TPE蜂为先进的能量吸收应用提供了潜力.
研究的目的:
- 调查曲启动器对增材制造的TPE蜂防撞性能的影响.
- 评估蜂巢的能量吸收能力和粉碎效率,有或没有曲启动器.
- 为了评估这些材料的耐用性和性能,在重复的压缩测试和变化的应变率下进行测试.
主要方法:
- 附加制造TPE (热塑性弹性体) 蜂,带有或没有曲启动器 (1BI与0BI).
- 在准静态和动态应变速率下对蜂样本进行压缩测试.
- 在多个测试周期中分析压碎效率,峰值应力,平原应力和材料降解.
主要成果:
- 与0BI对应物相比,1BI蜂表现出较高的粉碎效率.
- 1BI样品在不同张力率下保持了提高的压缩效率,并且在多次压缩周期后显示了较少的降解.
- 1BI样本显示了峰值和平原压力的更好的平衡,表明能量吸收的一致性得到了改善.
结论:
- 在TPE蜂中使用的扣扣启动器可以提高能量吸收和防撞性能.
- 曲启动器的加入导致了卓越的性能和耐用性,特别是在重复冲击下.
- 附加制造的粘弹性蜂带有曲启动器,代表了吸收能源应用的有希望的进步.
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