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使用瓦聚合制造制造的基于板材的三重周期性最小表面格子的拉伸性能
Nareg Baghous1,2, Mewael A Abraham3, Naod T Mogos2
1Advanced Digital & Additive Manufacturing (ADAM) Group, Khalifa University of Science and Technology, 127788, Abu Dhabi, United Arab Emirates.
Scientific reports
|December 20, 2025
概括
三次周期性最小表面 (TPMS) 格子表现出不同的拉力和压力强度,在张力中刚度更高,但在压缩中收益强度更高. 这项研究指导设计TPMS格子,用于应力较高的应用.
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:
- 三重周期性最小表面 (TPMS) 格子为轻量化,高强度的应用提供了量身定制的机械性能.
- 虽然压缩行为得到了充分的研究,但TPMS网格的拉力行为仍未得到充分研究.
- 增材制造,特别是数字光处理,允许制造复杂的TPMS晶格结构.
研究的目的:
- 通过数字光处理制造的基于板材的TPMS网格 (Gyroid,IW-P,Primitive) 的散装拉伸性能.
- 为了确定单位电池的最佳数量,以准确地测量散装拉伸反应.
- 为了比较拉伸和压缩行为,并建立张力-压缩不对称性的定量关系.
主要方法:
- 使用数字光处理制造基于板材的TPMS网格.
- 测试功能分级的新型状腺样本,以确定批量反应标准.
- 在各种相对密度下对 Gyroid,IW-P 和原始 TPMS 格子进行单轴拉伸和压缩测试.
主要成果:
- 在横截面的6x6单元单元后,拉伸性能平稳,表明大量行为足够大小.
- 拉伸度超过了所有TPMS拓和密度的压力度.
- 在所有测试的TPMS结构中,在压缩下,收益强度高于张力.
- 在较高密度下,IW-P拓显示出优越的刚性和强度;在较低密度下,Primitive表现出色.
结论:
- 基于板的TPMS网格在机械性能方面表现出显著的张力-压缩不对称性.
- 拓和相对密度极大地影响TPMS网格的拉伸和压缩性能.
- 结果为优化TPMS晶格设计的紧张主导应用提供了关键数据.
相关概念视频
01:11Bending of Members Made of Several Materials
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 material's...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
01:19Members Made of Elastoplastic Material
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
As the bending moment...