强action下非平衡子系统的动力学形成
Dynamical formation of a nonequilibrium subsystem under severe action
摘要：
用分子动力学模拟了缺陷产生过程中非平衡子系统的形成。数值研究了低频声发射耗散为高频晶格平衡振动的特殊过程。明确的启发式的原因是用来引入不同的温度和熵的平衡和非平衡子系统。提出了一个简单的弛豫方程来描述非平衡熵的时间行为。
英文摘要：
Formation of the nonequilibrium subsystem in dynamical processes during defect generation is simulated by means of molecular dynamics. A particular process of dissipation of the low-frequency acoustic emission into high-frequency equilibrium vibrations of lattice is studied numerically. Clear heuristic reasons are used to introduce different temperatures and entropies for equilibrium and nonequilibrium subsystems. Simple relaxation equation is proposed to describe time behavior of the nonequilibrium entropy.
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