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相关概念视频

Behavior of Concrete Under Compressive Load01:23

Behavior of Concrete Under Compressive Load

149
Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...
149

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3D打印复合物同电网结构的压缩行为

Marina Andreozzi1, Carlo Bruni1, Archimede Forcellese1

  • 1Dipartimento di Ingegneria Industriale e Scienze Matematiche (DIISM), Università Politecnica delle Marche, Via Brecce Bianche 12, 60131 Ancona, Italy.

Polymers
|October 16, 2024
PubMed
概括

通过3D打印的碳纤维异网格结构显示了更高的填充密度和更好的抗性. 优化印刷工艺对于减轻空隙和提高要求高的应用程序的性能至关重要.

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:

  • 碳纤维增强聚合物 (CFRP) 提供高强度与重量比,非常适合航空航天和汽车工业.
  • 由于不稳定性和过早的故障,CFRP结构在压缩行为方面面临挑战.
  • 隔离网结构提高了CFRP面板的压力性能,但传统制造成本高昂.

研究的目的:

  • 为了研究3D打印的同网格CFRP结构的压缩行为.
  • 为了评估灌装密度对曲阻力的影响.
  • 为了识别3D打印的等离子网的故障模式和微观结构特征.

主要方法:

  • 使用连续纤维3D打印 (Anisoprint Composer A3) 制造八个同网格CFRP面板.
  • 在制造的面板上进行了曲测试.
  • 测试后的分析包括光学显微镜和扫描电子显微镜 (SEM).

主要成果:

  • 曲阻力与充填密度直接相关;更高的密度产生了更大的曲负载.
  • 故障模式从局部转向全球曲,并增加填充密度.
  • 在3D打印结构中观察到空隙,对机械性能产生负面影响.
关键词:
通过3D打印打印3D打印.复合材料 复合材料 是一种复合材料.这是一个异构电网.

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结论:

  • 3D打印的异网格CFRP结构具有显著的抗性,为高性能应用提供了可行的替代方案.
  • 充填密度是提高结构完整性的关键参数.
  • 通过流程优化解决空隙对于提高3D打印CFRP同电网的可靠性至关重要.