摘要
根据实验现象,提出了计算力学剥蚀的模型和判据,将剥蚀过程分解为材料分层和层内断裂两个过程:对分层过程利用激光辐照玻璃纤维/环氧树脂复合材料的热力学模型计算,对层内断裂过程用板壳模型计算。利用实验结果验证了模型的合理性,计算结果表明,力学剥蚀过程极大地降低了烧蚀穿孔所需的能量,对激光辐照效应影响很大;功率密度较低时,烧蚀效率较高。
Basing the experiment phenomenon, a model and criterion for simulating mechanics erosion process have been developed for laser irradiating glass/epoxy composite. The mechanics erosion process has been divided into two processes of delamination and layer fracture. A thermo mechanical model can be used until composite delamination appears. Then plates and shell theory can be used for simulating layer fracture. The experiment results agree well with the simulation value , and that shows the model is reasonable. The simulation results indicate that the mechanics erosion process is very important for laser ablation effect, and the ablation energy can be reduced greatly by the process; the ablation efficiency can be higher with lower laser intense.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2015年第1期205-211,共7页
Chinese Journal of Lasers
