分析机械特性和新型的参数依赖性,双重重新进入辅助性蜂结构的机械性质和参数依赖性
Levente Széles1, Richárd Horváth2, Lívia Cveticanin3
1Doctoral School on Materials Sciences and Technologies, Óbuda University, H-1034 Budapest, Hungary.
Polymers
|September 14, 2024
概括
与传统的辅助蜂相比,新的双重进入辅助蜂单元细胞设计增强了机械性能和能量吸收. 这种新的几何结构消除了曲,通过优化几何参数提供了更好的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 固体力学 固体力学是什么
背景情况:
- 辅助性材料具有负波桑比率,具有独特的变形特性.
- 广泛使用的辅助性蜂结构具有优势,但患有曲不稳定性.
- 重新进入的结构增强机械性能,但可能容易发生特定的变形模式.
研究的目的:
- 开发一种新的双重回入辅助性单元细胞设计.
- 增强辅助性结构的机械性能和能量吸收.
- 为了消除曲变形,同时保持辅助性行为.
主要方法:
- 设计和制造使用光聚合的双重重新进入辅助性单元细胞.
- 实验压缩测试,以评估机械性能和变形行为.
- 对几何参数 (偏移和偏移) 的系统变化,以研究它们的影响.
主要成果:
- 这种新的双重重新进入的设计显著超过了原来的auxetic蜂.
- 通过参数优化,能量吸收增加了高达767%,最大压力增加了高达17倍.
- 适当的参数选择消除了曲,确保了持续的辅助性行为.
- 分析近似成功预测了变形行为的参数依赖性.
结论:
- 双重重新进入的辅助性单元细胞设计有效地提高了机械性能和能量吸收.
- 几何参数 (偏移和偏移) 极大地影响材料的行为,使曲消除.
- 这项研究为设计具有优越性质的先进辅助性材料提供了一条途径.
相关概念视频
01:08Bending of Members Made of Several Materials
143
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.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
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01:15Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
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Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
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