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Applications of spring-mass model on crystalline lattices

机译:弹簧质量模型在晶格上的应用

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In this work we present a study of different one-dimensional, two-dimensional and three-dimensional arrangements of masses coupled by springs, to which are made to vibrate by small oscillations, achieving a vibration over the entire systeml called “mode of vibration”. To achieve the vibrations, the model Spring-Mass is used, that is a proposed mathematical-physical model by using systems of linear differential equations of second degree with constant coefficients, considering the forces applied to the masses as linear-elastic restitution forces with small displacements. Then the system is discretized and solved numerically by using the Euler-Cromer integration method. In order to experiment, we simulating the vibration of different periodic molecular configurations, where the ions are connected to each other by means of ideal springs. Each ion in the network vibrates as if it were a harmonic oscillator, so it is possible to analyze the dynamic lattice properties, such as the normal modes.
机译:在这项工作中,我们提出了对由弹簧耦合的质量的不同的一维,二维和三维布置的研究,通过小的振动使之振动,从而在整个系统上实现了一种称为“振动模式”的振动。 。为了实现振动,使用了“弹簧-质量”模型,该模型是通过使用具有恒定系数的二阶线性微分方程组,并考虑到施加到物体上的力为较小的线弹性回复力而提出的数学物理模型。位移。然后,使用Euler-Cromer积分方法离散化系统并进行数值求解。为了进行实验,我们模拟了不同周期性分子构型的振动,其中离子通过理想弹簧相互连接。网络中的每个离子都像是谐振子一样振动,因此可以分析动态晶格属性,例如正常模式。

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