【作者】 巢策洲； 刘华； 杨嘉陵；

【Author】 Chao Cezhou;Liu Hua;Yang Jialing;Beihang University;

【机构】 北京航空航天大学；

【摘要】 采用分子结构力学方法,基于改进的Morse原子势函数,将石墨烯的C-C共价键等效为非线性连接器。利用ABAQUS软件建立了完好和含缺陷的单层石墨烯分子结构力学模型,考虑了共价键拉压、弯曲和扭转产生的键能、非线性本构关系、大变形等因素,考察了缺陷的个数和分布等因素对石墨烯受到横向阶跃载荷作用的动态响应的影响。更多还原

【Abstract】 Based on the improved Morse potential function, the C-C covalent bond of graphenes is modeled by nonlinear connector on the basis of molecular structure mechanics method. The mechanical model of the molecular structure of perfect and imperfect monolithic graphenes is established by using ABAQUS software. The tension,bending, and torsion of covalent bond, and nonlinear constitutive relation and large deformation of graphenes are incorporated. The influence of number and location of defects on the dynamic response of graphenes subjected to lateral step loading is considered.更多还原