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非局部微结构对薄膜剥离的影响
Riccardo Cavuoto1,2, Luca Deseri3,4,5,6, Massimiliano Fraldi1,7,8
1Department of Structures for Engineering and Architecture, University of Naples "Federico II", via Claudio 21, 80125 Naples, Italy.
Meccanica
|August 26, 2024
概括
这项研究将周动力薄板模型扩展到大变形,包括超弹性和断裂. 这项研究强调了剥离薄膜中的非局部性如何影响工程应用中的机械行为.
科学领域:
- 计算力学是计算力学.
- 材料科学 是一种材料科学.
- 固体机械学 固体机械学
背景情况:
- 周动力学配方对于模拟断裂和大变形是有效的.
- 在软基板上脱落的薄膜会带来复杂的机械挑战.
- 非局部效应显著影响物质在压力下的行为.
研究的目的:
- 为了将缩小尺寸的围动力薄板配方扩展到大变形.
- 为了将超弹性和骨折纳入模型.
- 为了研究非局部性对薄膜剥离行为的影响.
主要方法:
- 开发了一种扩展的缩小尺寸的配方,用于周动力薄板.
- 包括在大型变形模式中的超弹性和断裂.
- 使用数值模拟和基准剥离示例验证了模型.
主要成果:
- 该模型准确地预测了非局部性对薄膜剥离的影响.
- 证明了损坏的去局部化和不那么破坏性的故障模式.
- 在非局部薄膜中观察到意想不到的机械行为.
结论:
- 剥离层中的非局部性显著影响结构反应,并可以诱导有用的机械行为.
- 这些发现建议设计具有特定非局部交互网络的材料,以提高性.
- 这项工作为开发具有改进粘合性能的新材料系统和接口提供了洞察力.
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