激光作用下复合材料损伤的数值模拟

Numerical simulation for damage of composite materials due to laser strike

摘要:

针对激光对纤维增强复合材料的破坏问题，在考虑复合材料细观结构的情况下，运用有限元软件ANSYS对材料温度场、热应力以及烧蚀损伤的演化进行了数值模拟。论文详细研究了激光参数、材料参数，诸如功率密度、材料热导率等对复合材料损伤和烧蚀过程的影响。特别给出了，温度场、热应力场和烧蚀场随时间的变化。研究表明考虑细观结构的模型相比均匀化模型能更好的模拟复合材料的破坏。

Abstract:

The damage problem of composite material caused by laser irradiation is solved in consideration of microstructure model. The finite element software ANSYS is used to simulate the temperature field，thermal stress field and evolution of the ablation hole. The damage factors of composite materials and ablation process have been researched in this paper, such as power density and thermal conductivity .Furthermore, the temperature field, thermal stress and ablation field changing with time are also given in this paper. This research shows that compared with the uniform model，the microstructure model simulates the damage of composite material better.