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22.214.171.124 Damage to Intact Bonds
At any given time , there is a maximum value of that has been achieved over the past deformation history. This maximum value may be distinct for each bond family , since intact bond families may yield at different values of ; it is thus denoted by , Any damage sustained by intact bonds reduces their mass fraction, such that and hence the mass balance of eq.(5.7.2-2) is satisfied. Since all remaining intact bonds yield at and thus no intact bonds are left to sustain damage, remains constant constant for bond family when .