Sensitivity interface at Element Level

The following functions need to be implemented in each element for sensitivity computation:

Return to Extension of an existing material,cross section, and element for DDM-based:

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int setParameter(const char **argv, int argc, Parameter &param);

int updateParameter (int parameterID, Information &info);

int activateParameter(int passedParameterID);

const Vector & getResistingForceSensitivity(int gradIndex);

int commitSensitivity(int gradIndex, int numGrads);

const Matrix & getInitialStiffSensitivity(int gradIndex);

const Matrix & getDampSensitivity(int gradIndex);

const Matrix & getMassSensitivity(int gradIndex);