Simulation of the Rouse Relaxation Modulus — in an Equilibrium State

3 Simulation of the Rouse Relaxation Modulus — in an Equilibrium State 

In accordance with the fluctuation-dissipation theorem (Appendix 16.B), at low strains A in the linear region, the normalized relaxation modulus given by Eqs. (16.10) and (16.11) is equivalent to the time-correlation function  

/ represents a large number of iterations. In the simulation, all the six combinations of Jafsit) (with a / ) may be used for averaging in the calculation of the time-correlation function the xy component is used as the representative of the shear stress in all the discussions. The simulation result as obtained through Eqs. (16.10) and (16.11) may be referred to as the step strain-simulated Gs t), as opposed to the equilibrium-simulated Gs t) obtained through Eq. (16.12). 

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