Matrix in ABAQUS Matrices: Stiffness, Mass, Viscous Damping, Structural Damping, Load Formats:  FORMAT=MATRIX INPUT (default) to specify that the output use the matrix input text format that is consistent with the format used by the matrix definition technique in Abaqus/Standard. FORMAT=LABELS to specify that the output use the standard labeling format. FORMAT=COORDINATE to specify that the output use the common mathematical coordinate format. …