SMA 增强含损伤智能结构的失效研究

基金项目: 航空科学基金项目(01G52041); 国家自然科学基金项目(10072026 , 50135030)

详细信息

FAILURE OF SHAPE MEMORY ALLOY REINFORCEDSMART STRUCTURE WITHDAMAGES

The Aeronautical Science Key Laboratory for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

摘要

摘要: 从细观角度出发, 运用变分原理着重对形状记忆合金(Shape Memory Alloy, SMA) 增强含损伤智能结构的热、力学行为进行了分析, 给出了含损伤典型单元体的细观位移场、应力应变场的数学描述, 建立了SMA增强智能结构界面的失效判据, 并通过算例对失效判据进行了直观的几何描述。本文的结果为进一步研究智能结构的完整性提供了相应的理论支持。
- 智能结构 /
- 损伤 /
- SMA /
- 失效 /
- 细观分析 /
- 变分原理
Abstract: The thermo-mechanical behaviors of shape memory alloy (SMA) fiber reinforced smart structure with damages were analyzed through variational principle. Mathematical expressions for meso-displacement field , stress-strain fieldof typical element with damages were presented , and a failure criterion for interface failure between SMA fibers and matrix was established. The failure criterion was geometrically characterized with an example. The results may provide atheoretical foundation for further studying on integrity of SMA smart structures.
- smart structures /
- damages /
- SMA /
- failure /
- meso-mechanical analyses /
- variational principle