A — Molecular Expression for the Stress Tensor

Consider a volume Vb, which contains N beads. There are totally N N — l)/2 pair interactions between the beads, chemically bonded or not. Then Eq. (6.35) can be generalized to express the stress tensor arising from the interactions between the N beads in Vb as 

When only a single chain is considered as in a mean-field representation, Eq. (16.A.3) reduces to the normahzed form given by Eq. (16.10). 

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To derive a molecular expression for the stress tensor component which is the basic quantity if one wishes to compute pseudo-experimental data F (/i) /R, we start from the thermodynamic expression for the exact differential given in Eq. (1.59), where the strain tensor [Pg.202]

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