复合材料与重新进入格子:填充剂对辅助性行为的影响
Mikhail Tashkinov1, Anastasia Tarasova1, Ilia Vindokurov1
1Laboratory of Mechanics of Biocompatible Materials and Devices, Perm National Research Polytechnic University, Komsomolsky Ave., 29, 614990 Perm, Russia.
Polymers
|October 28, 2023
概括
研究人员探索了用于生物医学用途的带有软填充剂的辅助性格子复合材料. 实现不同的填料刚度可调节的Poisson.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 生物医学工程 生物医学工程
背景情况:
- 带有重新进入单元细胞的辅助性格子结构表现出独特的变形行为.
- 将软填充剂纳入这些结构是对可调节的机械性能的一种新方法.
- 生物医学应用需要具有精确控制机械反应的材料.
研究的目的:
- 为了研究带有软填充剂的辅助性格子复合材料的变形行为.
- 分析填料机械性能对复合材料的波桑比率和整体机械响应的影响.
- 根据填充剂刚度,评估这些双相复合材料的故障概率.
主要方法:
- 使用光线沉积建模制造3D辅助性格子结构.
- 开发数值有限元素模型用于计算分析.
- 3D打印样品的实验性拉伸测试与数字图像相关性,用于应变测量.
主要成果:
- 复合材料的有效波桑比率可以通过改变填充剂刚度来调整为正值,负值或接近零值.
- 有限元模型为机械行为和应力分布提供了洞察力.
- 研究了与填充剂刚度和辅助性结构相关的故障概率.
结论:
- 软填料集成提供了一个可行的策略来定制辅助性格子复合材料的机械性能.
- 开发的模型和实验方法准确地描述了这些先进的材料.
- 这些发现对设计用于生物医学应用的定制材料有影响.
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