You can use the Special menu in the Interaction module to define the following engineering features:
Inertia. You can define lumped mass, rotary inertia, and heat capacitance at a point on an assembly. In an ABAQUS/Standard analysis you can also define mass and inertia proportional damping and composite damping. For more information, see “Modeling inertia,” Section 20.2.
Crack. You can define an embedded seam crack with duplicate overlapping nodes, and you can include the seam crack in a contour integral analysis. You can also define a crack in an existing region and perform a contour integral analysis. For more information, see “Modeling fracture mechanics,” Section 20.1.
Springs/Dashpots. You can define springs and dashpots that exhibit the same linear behavior independent of field variables. You can also define both spring and dashpot behavior on the same set of points. In an ABAQUS/Explicit or an ABAQUS/Standard analysis, you can model springs and dashpots that connect two points, following the line of action between the two points. In an ABAQUS/Standard analysis, you can also model springs and dashpots that connect two points, acting in a fixed direction, or that connect points to ground. For more information, see “Modeling springs and dashpots,” Section 20.4.
