使用增材制造制造制造的周期格子结构轻量吊杆梁的柔性特性:实验和有限元素方法
Aamer Nazir1,2, Ahmed Gohar1,3, Shang-Chih Lin1,4
1High Speed 3D Printing Research Center, National Taiwan University of Science and Technology, Taipei, Taiwan, Republic of China.
3D printing and additive manufacturing
|December 20, 2023
概括
轻量级格子结构,包括Schwarz-P,Schwarz-D,Gyroid和Octet-truss,被测试为悬臂梁. 施瓦茨-D格子光束表现出卓越的性能,这是由于其拉伸主导的拓结构.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 增材制造 增材制造 增材制造
背景情况:
- 格子结构为工程系统提供轻量化解决方案,对于减少质量和增强机械性能至关重要.
- 吊杆梁是许多应用中的重要组件,但轻量级格子设计面临着设计和制造方面的挑战.
- 研究格子结构的悬臂梁对于推进轻量级工程解决方案至关重要.
研究的目的:
- 为了评估四个格子结构 (Schwarz-P,Schwarz-D,Gyroid,Octet-truss) 的机械反应,作为悬臂梁.
- 分析曲特性,包括应力,刚性和拉伸能量,在悬臂负荷下.
- 通过有限元分析 (FEA) 验证实验结果,以确定应力分布和故障模式.
主要方法:
- 使用Multi Jet Fusion增材制造制造四个格子结构的悬臂梁的制造.
- 开发惯性时刻方程,以分析非 prismatic 梁的对称和不对称曲.
- 在悬臂负荷下对梁进行实验测试,直到故障.
- 有限元分析 (FEA) 用于模拟应力分布和验证实验结果.
主要成果:
- 基于表面的格子结构 (Schwarz-P,Schwarz-D,Gyroid) 由于优越的负载转移,优于基于梁的八格子结构.
- 施瓦茨-D格子束表现出最好的性能,归因于其拉伸主导的拓结构和更高的模量.
- FEA的结果与实验数据密切匹配,验证了应力分布和故障机制.
结论:
- 格子结构拓学显著影响横向梁的机械性能.
- 施瓦茨-D格子结构是轻量级,高性能横向梁应用的有希望的候选者.
- FEA是一个可靠的工具,用于预测行为和验证格子结构组件的设计.
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