机械行为和能量吸收能力的三角函数曲线杆细胞基格子结构在压力负载下的压缩负载
Linlin Zhang1, Junwei Wu1, Yuejing Zhao1
1School of Mechanical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China.
Scientific reports
|July 2, 2025
概括
新的三角函数调制格子结构显著提高了机械性能. 这些通过增材制造和模拟验证的增强设计,与传统的体中心立方格 (BCC) 格子相比,提供更高的强度和能量吸收.
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:
- 传统的以身体为中心的立方体 (BCC) 格子超材料由于结构不连续性和应力度而面临限制.
- 这些缺陷阻碍了优化BCC格子结构中的机械性能.
研究的目的:
- 引入一种使用三角函数调制的支柱轴的新型格子设计方法.
- 通过片过渡技术提高结构性能,并研究新格子配置的机械行为.
主要方法:
- 开发了三种基于三角函数曲线杆细胞的格子结构 (TCRC,SCRC,CCRC) 和它们的片增强变体 (TCRC-ipv,SCRC-ipv,CCRC-ipv).
- 使用选择性激光化 (SLM) 增材制造制造实验样本的制造.
- 准静态压缩测试和非线性有限元素方法 (FEM) 模拟来分析机械反应.
主要成果:
- 基于三角函数的拓优化和节点片设计显著提高了整体结构性能.
- 与BCC相比,TCRC-ipv配置表现出最佳性能,弹性模量增加了39.2%,峰压强度增加了59.4%,收益强度增加了46.1%.
- 能量吸收能力在压力平原上升了10.3%,特定能量吸收增加了86.1%.
结论:
- 提出的基于三角函数的格子设计策略,结合片优化,有效地克服了传统BCC结构的局限性.
- TCRC-ipv网格显示出卓越的机械性能和能量吸收能力,为工程应用提供了一个有前途的替代方案.
- 这项工作通过多尺度协作优化为晶格元材料的拓优化建立了一个新的框架.
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