Release 11.0 Documentation for ANSYS
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The most commonly used node-to-node elements are shown in the following figure.
Figure 8.1 Node-to-Node Contact Elements
In terms of solution CPU time, the elements shown are the simplest and least expensive of all contact element types. When modeling conditions warrant their use, they can be an effective tool for modeling a variety of contact situations. CONTA178 offers more features and flexibility than CONTAC12 and CONTAC52. The following lists the features available with CONTA178:
More contact algorithms, including the Lagrange method (KEYOPT(2))
Semiautomatic contact stiffness (real constants FKN-FKS)
More flexibility for defining contact normal
More contact behaviors (KEYOPT(10))
Cylindrical gap with friction (KEYOPT(4) = 4)
Damper (real constants CV1, CV2)