of intervals. In this case the program will stop after all data are processed with an error message that you must redefine the material data. See , for a more detailed discussion of data regularization. Input File Usage: , NONLINEAR,

DEPENDENCIES=nfirst data

lineforce, relative

displacement, temperature,

field variable 1, etc....

Abaqus/CAE Usage: D efining nonlinear spring behavior is not

supported in Abaqus/CAE when you define springs

as engineering features; instead, you can define

connectors that have spring-like elastic

behavior (see ).

Defining the direction of action for SPRING1 and SPRING2 elements You define the direction of action for SPRING1 and SPRING2 elements by giving the degree of freedom at each node of the element. This degree of freedom may be in a local coordinate system (). The local system is assumed to be fixed: even in large-displacement analysis SPRING1 and SPRING2 elements act in a fixed direction throughout the analysis. Input File Usage: , ORIENTATION=namedof at node 1,

dof at node 2

Abaqus/CAE Usage: P roperty or Interaction module:

SpecialSprings/DashpotsCreate, then select one

of the following:

Connect points to ground: select points:

Orientation: Edit: select orientation

Connect two points: select points: Axis:

Specify fixed direction: Orientation: Edit:

select orientation