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使用三级层次的等级 WAAM 模型进行热力学建模和圆形细节的实验生产
Pavlo Anikin1, Flávia Bastos2, Galina Shilo3
1Department of Computational Modelling, Federal University Juiz de Fora, Rua José Lourenço Kelmer, Juiz de Fora, 36036-900, Brazil. pavlo.anikin@estudante.ufjf.br.
Scientific reports
|March 9, 2026
概括
电弧增材制造 (WAAM) 的新三级层次模型可以预测热积累和残余应力的模拟. 实施层级冷却成功缓解了热问题,指导了实验制造.
科学领域:
- 制造业 工程 制造工程
- 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:
- 电弧增材制造 (WAAM) 能够实现大规模的金属零件生产,但面临着热量积累和残余应力等挑战.
- 在WAAM中过程自动化是不完整的,阻碍了可靠和可预测的制造结果.
研究的目的:
- 开发和验证一个三级层次的WAAM模型 (珠子,层,墙) 用于预测热力学模拟.
- 通过使用开发的模拟框架,使圆形形状细节的知情实验制造成为可能.
主要方法:
- 在ABAQUS.中进行过渡合的热结构有限元素分析.
- 纳入实验Al 6061材料数据,热输入的DFLUX和对流辐射边界条件.
- 连续沉积模拟与热监测和残余应力评估,然后进行实验验证.
主要成果:
- 珠子和层级的模拟显示了可控的热分布和稳定的热振荡.
- 墙壁层次的模拟显示了渐进的热量积累,导致重新化,这被层层冷却到150°C缓解了.
- 经过验证的模拟准确地使用机器人GMAW-CMT系统引导实验制造.
结论:
- 三级层次的层次热力学框架有效预测WAAM中的热问题.
- 模拟到实验的工作流可以增强WAAM过程规划和温度控制策略.
- 这种方法支持机器人WAAM系统的自动化编程的开发.
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