Anchors with Displacements - CAESAR II - Reference Data

CAESAR II Applications Guide

Reference Data

Follow these guidelines to model anchors with displacements in CAESAR II:

  • Enter only displacements for the node.

  • Do not specify restraints or anchors at the node to be displaced.

  • For anchors with displacements, ensure that all six degrees-of-freedom at the node are defined.

Degrees-of-freedom not defined (left blank) in any displacement vector are presumed to be free in all load cases.

You can define up to nine different displacement vectors.

Non-zero displacements are usually part of the thermal expansion effects. They should be added into any analysis case containing the corresponding thermal, such as W+P1+T1+D1. We recommend load cases that do this automatically.

The translations and/or rotations for any nodal degree of freedom that has displacements specified in any displacement vector are zero for the following load cases:

  • Those that do not contain a vector as part of the load case identification

  • Those where the specified non-zero value for load cases containing the vector is part of the load case identification

For example, defined displacements are used if the load case is W+P1+T1+D1 (OPE), and those displacements are held to zero if the load case is W+P1 (SUS).

After a degree-of-freedom is fixed in one displacement vector, it cannot be free in another displacement vector at the same node.

The default value for a blank displacement box is zero.

The figure below shows an anchor with predefined displacements.