多平面スライスによる多軸積層造形のための微分可能なモデリングと最適化
1Sustainable Design Engineering, Faculty of Industrial Design Engineering, Delft University of Technology, Landbergstraat 15, 2628CE Delft, Zuid-Holland The Netherlands.
まとめ
ワイヤアーク積層造形における多平面堆積は、サブパーツごとに異なる印刷方向を使用することで、歪みを大幅に低減します。この新しいアプローチは、複雑な形状の従来の方法と比較して1桁の改善を提供します。
科学分野:
- 製造工学
- 材料科学工学
背景:
- ワイヤアーク積層造形(WAAM)は、残留応力と歪みの問題に直面しています。
- 多軸積層造形は、高度な堆積戦略を通じて潜在的な解決策を提供します。
研究 の 目的:
- WAAMにおける多平面スライスのための新しい連続的かつ微分可能な定式化を開発すること。
- 堆積戦略を最適化することにより、WAAMにおける歪みを低減すること。
主な方法:
- 疑似時間場は、部品をサブパーツにセグメント化するためにパラメータ化されます。
- 配向場は、各サブパーツの異なる印刷方向を定義します。
- 勾配ベースの最適化は、微分可能な定式化によって可能になります。
主要な成果:
- 多平面堆積戦略を適用して、WAAMにおける歪みを低減しました。
- 複雑な形状(穴、オーバーハング、アンダーハング)を持つ数値例をテストしました。
- 従来の平面戦略と比較して、歪みは1桁削減されました。
結論:
- 提案された微分可能な多平面スライス定式化は、WAAMにおける歪みを効果的に低減します。
- この方法は、複雑な形状に適しており、平面戦略と比較して大幅な改善を提供します。
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