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相关概念视频

Determination of Pi Terms01:15

Determination of Pi Terms

The Buckingham Pi theorem is a valuable method in dimensional analysis, reducing complex relationships between variables into dimensionless terms. Relevant variables in analyzing the lift force on an airplane wing include lift force, air density, wing area, aircraft velocity, and air viscosity. Expressing each variable in terms of fundamental dimensions — mass, length, and time — provides a consistent foundation for constructing these dimensionless terms.
The theorem indicates that the number...

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Fused Filament Fabrication FFF of Metal-Ceramic Components
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在使用数值模拟的L-PBF打印过程中,重量因子作为最佳部件定向的参数.

Ľuboš Kaščák1, Ján Varga1, Jana Bidulská2

  • 1Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Košice, Letná 9, 04002 Košice, Slovakia.

Materials (Basel, Switzerland)
|July 27, 2024
PubMed
概括

优化激光粉床融合 (L-PBF) 部件需要模拟来预测错误. 数字模拟和拉力测试显示,部分方向1产生了比方向3更好的特性.

关键词:
金属添加剂工艺的过程.模拟过程的过程模拟.支持材料的支持材料.在 voxel 元素中,有 voxel 元素.

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科学领域:

  • 添加剂制造 添加剂制造 添加剂制造
  • 材料科学 材料科学 材料科学
  • 机械工程 机械工程

背景情况:

  • 激光粉末床融合 (L-PBF) 是汽车和航空领域复杂零件的现代制造方法.
  • 数字模拟有助于优化L-PBF流程,提高效率和准确性.
  • 模拟粉末烧结有助于预测和防止制造错误.

研究的目的:

  • 通过数值模拟优化L-PBF过程.
  • 研究个别参数对增材制造结果的影响.
  • 根据加权的标准来预测最佳的部件方向.

主要方法:

  • 使用的Simufact添加剂软件用于数值模拟.
  • 分析了三部分方向,考虑支材料面积,体积,voxel数量和构建风险.
  • 将模拟结果与静态拉力测试中的实验数据进行比较.

主要成果:

  • 模拟预测了与方向3相比,部分方向1的优越特性.
  • 静态拉力测试证实,部件定向1实现了比定向3更好的机械性能.
  • 确定了影响零件质量的关键参数,并在L-PBF中取得成功.

结论:

  • 数字模拟是优化L-PBF零件定向的一个有价值的工具.
  • 零件定向对机械性能和制造成功有重大影响.
  • 该研究提供了一种方法来预测和实现L-PBF的最佳零件性能.