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Theory Manual Version 3.6
 Subsubsection 5.8.1.1: Damage to Intact Bonds Up Subsection 5.8.1: Theoretical Formulation Subsubsection 5.8.1.3: Strain Energy Density, Stress, and Damage 

5.8.1.2 Damage to Yielded Bonds

At time , the yield threshold for family is reached and all remaining intact bonds in family yield such that Once they have formed, yielded bonds may sustain plastic damage. The maximum value of the plastic damage measure experienced by family up until the current time is denoted by , For , yielded bonds may continue to yield, breaking and reforming into successive generations. However, in contrast to Section 5.7↑, the mass fraction of yielded bonds in family no longer remains constant over successive yield generations, due to the plastic damage reaction. Each time a yielded bond breaks and reforms into a new generation, is given by the undamaged fraction of yielded bonds, Equations (5.8.1.1-2),(5.8.1.2-1), and (5.8.1.2-3) govern the temporal behavior of the bond species mass fractions.
 Subsubsection 5.8.1.1: Damage to Intact Bonds Up Subsection 5.8.1: Theoretical Formulation Subsubsection 5.8.1.3: Strain Energy Density, Stress, and Damage