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关于3D打印PLA和PLA-Cu材料的状态方程和喷射形成的研究
Jianya Yi1, Ruijie Hao1, Qing Ji2
1School of Mechatronic Engineering, North University of China, Taiyuan 030051, China.
Polymers
|September 9, 2023
概括
研究人员开发了3D打印的聚乳酸 (PLA) 和PLA-铜复合. 实验和模拟揭示了不同的喷射行为,包括PLA喷射中的气化,为低密度板提供了新的材料选择.
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:
- 低密度板对于研发至关重要,但高效的准备和材料选择仍然是挑战.
- 3D打印技术为定制制造复杂几何形状提供了潜力.
- 了解在冲击负荷下料材料的动态行为对于性能预测至关重要.
研究的目的:
- 为了研究3D打印的聚乳酸 (PLA) 和PLA-铜复合面的冲击波特性和喷射行为.
- 为了确定这些新材料的状态参数的格鲁尼森方程.
- 在喷气形成和速度方面比较PLA和PLA铜的性能.
主要方法:
- 使用3D打印技术制备PLA和PLA-铜复合层.
- 一级轻气炮实验测量冲击波速度 (D) 和粒子速度 (u).
- 使用衍生状态方程来建模喷气形成的数值模拟.
- 脉冲X射线放射学用于实验验证模拟结果.
主要成果:
- 对于这两种材料,确定了冲击波速度和粒子速度之间的关系.
- 格鲁尼森的状态参数方程适用于PLA和PLA-铜.
- 数字模拟和实验结果显示了两个喷气的"膨胀粒子流"特征.
- 解放军喷气机在头部出现了气化,占其总长度的约21%.
- 解放军-Cu喷气头速度 (8104.25 m/s) 比解放军喷气头速度 (7798.35 m/s) 高.
结论:
- 3D打印技术为制备低密度料提供了一种新的方法.
- 与纯PLA相比,PLA-铜复合材料作为低密度层材料表现出有希望的性能.
- 该研究提供了关于3D打印料材料动态行为和状态方程的宝贵数据.
- 这项研究为材料选择和制造技术在高速冲击应用中开辟了新的途径.
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