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 Chapter 31, “Inertia.”
Crack. You can study the initiation and propagation of cracks using the following techniques:
An embedded seam crack with duplicate overlapping nodes
A contour integral analysis
The extended finite element method (XFEM)
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 Chapter 34, “Springs and dashpots.”
Fasteners. You can model point-to-point connections between two or more faces using point-based or discrete fasteners. Point-based fasteners can be defined using attachment points, reference points, or orphan mesh nodes. Discrete fasteners can be defined using attachment lines. For more information, see Chapter 28, “Fasteners.”
