fix_modify AtC output boundary_integral [field] faceset [name]
 fix_modify AtC output boundary_integral stress faceset loop1  
 
Calculates a surface integral of the given field dotted with the outward normal of the faces and puts output in the "GLOBALS" file
Must be used with the hardy/field type of AtC fix ( see fix atc command )
none
 1.6.1
 1.6.1