功能分级和几何修改的辅助性重新进入蜂巢:实验和数值分析
Munise Didem Demirbas1, Safa Ekrikaya2,3, Umut Caliskan1,4,5
1Department of Mechanical Engineering, Erciyes University, Kayseri 38280, Türkiye.
Polymers
|June 13, 2025
概括
新的双圆柱形外重新进入 (RE) 蜂显示可调节的负波桑波桑.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 增材制造 增材制造 增材制造
背景情况:
- 辅助性重新进入 (RE) 蜂具有负波桑比率 (NPR),与传统的六角蜂相比,提供更好的能量吸收.
- 设计修改是进一步提高这些辅助性结构的能量吸收能力的关键.
研究的目的:
- 探索基于双圆柱体外的新型RE单元电池 (REC) 设计,具有负波桑比率 (NPR).
- 分析材料变化对这些新型REC设计的NPR的影响.
- 研究两个不同的几何配置:狭窄的REC (REC-N) 和宽的REC (REC-W).
主要方法:
- 使用增材制造 (AM) 制造了新的REC几何体的样本.
- 使用的材料包括聚乳酸 (PLA),烯 (ABS) 和功能分级 (FG) PLA-ABS复合材料.
- 根据ASTM-D695-15标准进行了压缩测试,以确定Poisson的比率,结果与数值模拟进行了验证.
主要成果:
- 该研究表明,通过改变特定材料的REC细胞几何,NPR可以变化高达20%.
- 材料组成的变化被证明可以改变NPR高达11%.
- 无论是REC电池设计还是材料变化,都会显著影响得到的NPR.
结论:
- 新的双圆柱体外REC表现出可调整的负波桑比率行为.
- 这些发现强调了几何设计和材料选择对RECs辅助性质的重大影响.
- 这项研究为优化辅助性材料用于特定的能量吸收应用提供了基础.
相关概念视频
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In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
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01:22Generalized Hooke's Law
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