摘要
文章利用平面应变正交各向异性材料率相关性的弹塑性本构模型和各向同性材料理想弹塑性本构模型,采用有限元方法编写程序,对X射线辐照碳酚醛-铝板时诱导的热击波进行数值模拟,讨论了热击波的传播规律。结果表明,在1 keV的X射线辐照下,X射线穿透极浅,材料表面发生气化现象,应力峰值较大;在3 keV的X射线辐照下,X射线穿透较深,热击波呈现双波结构,材料的层裂更明显。
Using the plane-strain anisotropic rate-related elasto-plastic constitutive model and the ideal isotropic elasto-plastic constitutive model,the thermal shock wave propagation induced by X-ray irradiation in carbon fiber-reinforced phenolic-aluminum plate is simulated by finite element method.The results show that under the irradiation of X-ray of 1keV,the penetration depth is small,the material surface is gasified,and the peak stress values are high;but under the irradiation of X-ray of 3keV,the penetration depth is much increased,the thermal shock wave takes a double-wave shape,and the delamination phenomenon is more significant.
出处
《航天器环境工程》
2011年第1期41-45,共5页
Spacecraft Environment Engineering
基金
国家自然科学基金(项目编号:11072262)
关键词
X射线
热击波
各向异性材料
本构模型
X-ray
thermal shock wave
anisotropic material
constitutive model
