基于路径的离散建模和工艺模拟用于热塑性化沉积建模技术
Zhuoran Yang1, Feibo Wang2, Yiheng Dun1
1Sino-European Institute of Aviation Engineering, Civil Aviation University of China, Tianjin 300300, China.
Polymers
|April 26, 2025
概括
一种新的模拟方法准确地预测了结沉积建模 (FDM) 部件中的曲. 这种方法通过建模材料沉积工具路径来提高复杂3D打印形状的尺寸精度.
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
- 计算力学 计算力学 计算力学
背景情况:
- 沉积建模 (FDM) 是一种广泛使用的,具有成本效益的增材制造 (AM) 技术.
- 由于印刷过程中的热应力,FDM零件经常遭受形变形.
- 由于复杂的材料沉积路径,预测这种变形具有挑战性.
研究的目的:
- 为FDM开发一种新的基于路径的离散建模和过程模拟方法.
- 为了提高FDM打印部件的尺寸精度和曲的预测.
- 为复杂的几何形状和其他AM过程提供适用于复杂几何形状的模拟工具.
主要方法:
- 使用离散建模方法,根据过程参数和工具路径重建有限元 (FE) 模型.
- 在ANSYS 2022 R1中使用了出生死亡元素方法 (BDEM) 来模拟热力学合场.
- 定制计算程序是用C++开发的,用于模拟.
主要成果:
- 开发的模拟方法准确地预测了FDM部件的扭曲变形.
- 使用ABS材料的数值示例表明模拟和真实部件变形之间存在很强的一致性.
- 这种方法在复杂几何形状上被证明是有效的.
结论:
- 基于路径的离散建模和模拟方法为预测FDM部件变形提供了可靠的工具.
- 这种方法可以提高尺寸精度,减少3D打印元件的扭曲.
- 这些发现可应用于其他AM工艺和复杂零件设计.
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