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4.6.1 General Specification of Damage Materials
The material types for damage materials are “elastic damage” and “uncoupled elastic damage”. The following parameters must be defined:
|<elastic>||Specification of the elastic material|
|<damage>||Specification of the cumulative distribution function|
|<criterion>||Specification of the damage criterion|
The <elastic> tag encloses a description of the constitutive relation of the intact elastic material and associated material properties, as may be selected from the list provided in Section 4.1.3↑ for unconstrained materials (used with “elastic damage”) and Section 4.1.2↑ for uncoupled materials (used with “uncoupled elastic damage”). The <damage> tag encloses a description of the cumulative distribution function and associated material properties, as may be selected from the list presented in Section 4.6.2↓. The <criterion> tag encloses a description of the damage criterion, as may be selected from the list presented in Section 4.6.3↓.
<material id="1" type="elastic damage"> <elastic type="neo-Hookean"> <density>1</density> <E>0.13</E> <v>0.3</v> </elastic> <damage type="CDF Weibull"> <alpha>8</alpha> <mu>0.3</mu> <Dmax>1</Dmax> </damage> <criterion type="DC max normal Lagrange strain"> </criterion> </material>