摘要
本文用分子动力学(MD)方法,模拟研究了由含氮量分别为11%、12%、13%、14%的硝化纤维素(NC)构成的单基药模型及其与硝化甘油(NG)构成的双基发射药模型的力学性能,得到其各力学参数:弹性系数、拉伸模量、体积模量、剪切模量和泊松比.结果表明,增加含氮量可使单基药NC塑性增强、刚性减弱.相比于单基药NC,双基药NC/NG的刚性较弱、塑性较强,具有较好的力学性能.
The mechanical properties of single-base propellants with nitrogen content of 11,12,13,14 percent of weight and double-base propellants consisting of nitrocellulose（ NC ） and nitroglycerin （NG） were simulated by molecular dynamics （MD） method. The mechanical properties, i.e. elastic coefficients, tensile modulus, bulk modulus, shear modulus and Poisson＇s ratio were obtained. It was found that with the increase of nitrogen content, the rigidity of single-base propellants decreases and the plasticity of single-base propellants increases. The results also show that the double-base propellants has superior plasticity and inferior rigidity, in comparison with single-base propellants.
出处
《南京晓庄学院学报》
2007年第6期47-50,共4页
Journal of Nanjing Xiaozhuang University
基金
南京晓庄学院院级科研项目(2006NXY18)
关键词
硝化纤维素
硝化甘油
发射药
分子动力学模拟
力学性能
nitrocellulose
nitroglycerin
propellants
molecular dynamics simulation
mechanical property
