*ORIENTATION
15.1 *ORIENTATION: Define a local axis system for material or element property
definition, for kinematic coupling constraints, for free directions for inertia relief
loads, or for connectors.
This option is used to define a local coordinate system for definition of material properties; for material
calculations at integration points; for element prope rty definitions (e.g., connector elements); for output
of components of stress, strain, and element section forces; and for kinematic and distributing coupling
constraints. In ABAQUS/Standard it can be used to define local directions for contact pair interaction
properties and spring, dashpot, and JOINTC elements; fordefinition of local f ree directions for inertia relief
loads; and for output of components of surface variables.
Products: ABAQUS/Standard ABAQUS/Explicit
Type: Model data
Level: Part, Part instance, Assembly
References:
•“Orientations,” Section 2.2.5 ofthe ABAQUS Analysis User ’sManual
•“ORIENT,”Section 1.1.14 of the ABAQUS User Subroutines Reference Manual
Required parameter:
NAME
Set this parameter equal toa labelthat will be used to refer to the orientationdefinition. Orientation
names in the same input file must be unique.
Optional parameters:
DEFINITION
Set DEFINITION =COORDINATES (default) to define the local system by giving the coordinates
of the three points a,b, and, optionally, c(the origin) appropriate to the SYSTEM choice from
Figure 15.1–1.
SetDEF INITION=NODES to define the local system by giving g lobal node numbers for points
a,b, and, optionally, c(the origin).
Set DEFINITION=OFFSET TO NODES to define the local system by giving local node
numbers (on the element where the orientation is being used) to define the points a,b,and,
optionally, c(the origin) in Figure 15.1–1. This parameter value cannot be used with spring,
dashpot, or JOINTC elements. In addition, it cannot be used with the *KINEMATICCOUPLING,
*INERTIA RELIEF,or *CONTACT PAIR options.
15.1–1
ABAQUS Version 6.1 Module: ID:
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