负载施加角度对Al蜂的压缩行为的影响在组合的正常-剪切应力下
Giulia Arquilla1, Alessandra Ceci1, Girolamo Costanza1
1Industrial Engineering Department, University of Rome Tor Vergata, Via del Politecnico 1, 00113 Rome, Italy.
Materials (Basel, Switzerland)
|August 12, 2023
概括
蜂在合并正常剪切应力下表现出增加的剪切阻力和触角位移. 这与纯正的正常应力形成鲜明对比,为结构应用揭示了关键的见解.
科学领域:
- 材料科学与工程 材料科学与工程
- 机械工程 机械工程
背景情况:
- 蜂结构通常设计用于与细胞轴平行的压力负荷.
- 操作条件可能引入剪切应力,可能导致过早故障.
- 了解联合应力下的行为对于可靠的结构设计至关重要.
研究的目的:
- 为了比较蜂在纯正常应力下与合并正常剪切应力下的压缩行为.
- 为了研究不同的负载应用角度对机械响应的影响.
- 分析变形模式,并从应力-张力数据中推导出机械元件.
主要方法:
- 测试蜂巢样品 (3000系列Al合金) 使用一个特殊的形对.
- 在15°和25°的负载角度应用组合的正常切削应力,与纯正的正常应力 (0°) 一起应用.
- 符合ASTM C365/C365M-22标准的压缩测试.
- 使用理论模型来导出正常和接触式应力-应变元件.
主要成果:
- 增加的负载应用角度增强了蜂剪切阻力和触角位移,直到密集.
- 观察到的变形模式随着负载角度的增加而显著变化.
- 电池旋转角度随着交叉头位移和应用负载角度而增加.
结论:
- 与纯正的正常应力相比,蜂在组合的正常剪切应力下表现出增强的剪切阻力和触角位移.
- 这项研究为分析蜂结构中的联合压力行为提供了理论框架.
- 这些发现为优化面临复杂负载条件的蜂设计提供了关键数据.
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