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纳米尺度下结构力学行为因为表面效应和尺寸效应而与宏观尺度下结构力学行为有着本质的不同,分子动力学方法因其能通过原子运动理解结构变形细节而在纳米结构力学行为模拟中得到广泛应用.本文综述了近期在纳米丝结构力学行为研究方面的进展,包括自由弛豫态,应力应变关系,表面效应和尺寸效应,应变率效应等.
The structural mechanics behavior at the nanoscale is fundamentally different from that at the macroscale due to the surface effect and the size effect. The molecular dynamics method is widely used in simulating the mechanical behavior of nanostructures because of its ability to understand structural deformation details through atomic motions In this paper, recent advances in the mechanical behavior of nanowires were reviewed, including free relaxation behavior, stress - strain relationship, surface effect and size effect, and strain rate effect.