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akbib authored
A material has a function "energy" to compute the strain energy and methods first/secondDerivative which return local assemblers of the linearization and the hessian of the strain energy. [[Imported from SVN: r11174]]
085ebe8b
A material has a function "energy" to compute the strain energy and methods first/secondDerivative which return local assemblers of the linearization and the hessian of the strain energy. [[Imported from SVN: r11174]]