# Analytical rigid surface definition

 An analytical rigid surface: can be two-dimensional or three-dimensional; must be defined as model data; can be used with the infinitesimal-sliding, small-sliding, or finite-sliding mechanical contact formulations; should be oriented such that the analytical rigid surface's outward normal points toward any body it may contact; and is associated with a node, known as the rigid body reference node, whose motion governs the motion of the surface. The following topics are discussed:
 Related Topics About surfaces In Other Guides About contact interactions RSURFU *RIGID BODY *SURFACE

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