预测化沉积中的临界负载 建模用点方法使用含有口的石墨烯增强PLA板
Sergio Cicero1, Marcos Sánchez1, Sergio Arrieta1
1LADICIM, Departamento de Ciencia e Ingeniería del Terreno y de los Materiales, Universidad de Cantabria, Avenida de los Castros, 44, 39005 Santander, Spain.
Polymers
|September 28, 2023
概括
这项研究验证了点法,用于预测3D打印的石墨烯增强聚乳酸 (PLA-Gr) 复合材料中的断裂负载. 该方法在有口的结构应用中显示出可靠的准确性.
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:
- 3D打印复合材料的结构应用需要可靠的临界负载确定.
- 口 (应力升高器) 显著影响元件的承载能力.
- 沉积建模 (FDM) 是用于聚合物复合材料的常见3D打印技术.
研究的目的:
- 应用点方法 (PM) 来估计3D打印的石墨烯增强聚乳酸 (PLA-Gr) 板中的关键断裂负荷.
- 为了评估PM的准确性,FDM加工的PLA-Gr复合材料具有各种隙几何形状和厚度.
- 评估PM对超越原型设计的结构应用的适用性.
主要方法:
- 利用化沉积建模 (FDM) 制造具有45/-45光方向的PLA-Gr复合板.
- 在不同厚度 (5-20毫米) 的板上嵌入了U,V和圆形孔.
- 研究了不同的隙长度与宽度比 (a/W = 0.25和0.50).
- 应用点方法 (PM) 来估计临界负载,并与实验数据进行比较.
主要成果:
- 点方法 (PM) 在测试PLA-Gr复合板的临界负荷估计中提供了合理的准确性.
- 这些3D打印复合材料的PM的准确性与传统制造材料的准确性相当.
- 缺口的存在和类型,以及板厚和a/W比,影响了临界负载值.
结论:
- 点法是一种可行的方法,用于确定FDM打印的PLA-Gr复合材料中的关键断裂负荷.
- 这些发现支持使用PM来设计由这些先进材料制成的结构部件.
- 进一步的研究可以探索PM对更广泛的3D打印复合材料和复杂几何结构的适用性.
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