关于不同承载角度的三重周期性最小表面 (TPMS) 结构的能量吸收性能研究
Yongtao Lyu1,2, Tingxiang Gong1, Tao He3
1Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China.
Biomimetics (Basel, Switzerland)
|July 26, 2024
概括
三重周期最小表面 (TPMS) 结构为工程应用提供了出色的能量吸收. IWP TPMS结构显示了最高的能量吸收,特别是当整合曲和拉伸变形以实现多阶段的能量消耗时.
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:
- 三次周期最小表面 (TPMS) 结构越来越多地被用于航空航天,汽车和航运工程,因为它们的轻量级和优越的能量吸收能力.
- 优化TPMS结构的能量吸收对于提高结构完整性和在冲击或撞击场景下的性能至关重要.
研究的目的:
- 评估和比较三种不同的TPMS结构的能量吸收性能:陀螺,钻石和IWP.
- 研究不同承载角度对这些TPMS结构的能量吸收特性的影响.
- 分析不同TPMS架构的能量吸收效率的变形机制.
主要方法:
- 在Gyroid,Diamond和IWP TPMS结构上进行了准静态压缩测试.
- 在多个承载角度进行了测试,以评估方向性能.
- 分析了变形行为,以了解能量吸收的基本机制.
主要成果:
- 甲状腺结构表现出最少的能量吸收,对承载角度的敏感性最小.
- 钻石结构显示了能量吸收的显著差异,取决于负载角度.
- 尽管IWP结构具有高角度灵敏度,但其总体能量吸收能力最高.
- 由曲变形主导的结构稳定但效率较低,而具有拉力变形的结构更有效但对角度敏感.
结论:
- 在经过测试的类型中,IWP TPMS结构对能量吸收应用是最有效的.
- 整合曲和拉力变形机制可以通过多阶段能量消耗来增强能量吸收.
- 了解变形模式和角度灵敏度对于设计针对特定工程需求的高性能TPMS结构至关重要.
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