Molecular dynamics study of the mechanics for Ni single-wall nanowires

作者：Wang Li^*; Peng Chuanxiao; Gong Jianhong

来源：European Journal of Mechanics - A: Solids , 2009, 28(4): 877-881.

DOI：10.1016/j.euromechsol.2009.01.002

• Molecular dynamics
• Single-wall nanowires
• Mechanical properties

Molecular dynamics (MD) simulations based upon embedded atom method (EAM) potential are employed to study the fracture behavior of Ni single-wall nanotube (m, n) with a linear strand at the center at temperature of 4 K. An (m, n) nanowire consists of m close-packed strands and n defines the chirality. The results reveal that (6, 6) structure has the highest yielding stress level and Young';s modulus level. At constant close-packed strands m, the Young';s modulus of the nanowire increases as the wire radius increases. The (5, 5) and (6, 6) nanowires fracture suddenly beyond yielding point with little plastic deformation. The (7,4) nanowire shows the highest plasticity among all simulated nanowires for its maximum strain exceeds to 0.27.

• 出版日期2009-8
• 单位山东大学