高固体含能材料裂纹扩展黏性域模型应用研究  

Application of cohesive zone model for crack growth in energetic material with high solid particle content

作　　者：廖海波 孙朝翔[2] 

机构地区：[1]安徽省神剑科技股份有限公司,安徽合肥230061 [2]南京理工大学机械工程学院,江苏南京210094

出　　处：《南京理工大学学报》2015年第5期511-515,共5页Journal of Nanjing University of Science and Technology

摘　　要：针对含能粒子与基体的界面脱黏对高固体含能材料宏观力学性能的影响,该文基于黏性域模型基本理论和高固体含能材料的界面力学模型,采用界面黏性域模型对高固体含能材料的断裂过程进行了数值模拟,模拟结果与Tan的断裂实验数据较一致。分析了基于界面黏性域模型的高固体含能材料的裂纹扩展特点。结果显示,在裂纹扩展过程中最大应力始终位于裂纹尖端前方某一区域。计算模型与实验模型的一致性表明,黏性域模型可用于高固体含能材料断裂性能的研究。In view of that the debonding of energetic particle / matrix interfaces has important effect on the macroscopic behavior of energetic materials with high solid particle content,the basic theory of cohesive zone model and the interfacial mechanics model for energetic materials are presented here. The cohesive zone model is used to simulate the crack growth in energetic materials with the high solid particle content. The results of numerical simulations are in agreement with the results of Tan＇s experiments. By analyzing the characteristic of crack propagation in high energetic materials,it is known that the maximum stress zone is ahead of the crack tip in the whole crack growth process. The simulation results are in accordance with the experiment results,verifying that the cohesive zone model can be used for the mechanics studies of the energetic materials with the high solid particle content.

关 键 词：黏性域模型 含能材料 界面力学模型 裂纹扩展 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]