Two-Way Radio User Manual

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STEADY STATE DETECTION
18.33
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STEADY STATE DETECTION: Specify steady-state requirements for terminating a
quasi-static uni-directional simulation.
This option is used to define t he conditions that must be satisfied to determine that steady state has been
reached. It must be used in conjunction with the
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STEADY STATE CRITERIA option.
Product: ABAQUS/Explicit
Type: History data
Level: Step
References:
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“Steady-state detection,” Section 11.8.1 of the ABAQU S Analysis User’s Manual
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“Output to the output database,” Section 4.1.3 of the ABAQUS Analysis User’s Manual
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STEADY STATE CRITERIA
Required parameters:
ELSET
Set this parameter equal to the name of the element set for which this steady-state detection definition
is being applied.
SAMPLING
This parameter is used to specify the m ethod used to sample all steady-state norms associated w ith
this option. See “Steady-state detection,” Section 11.8.1 of the A BAQ US Analysis User ’s Manual,
for more information regarding steady-state norm definitions.
Set SAMPLING=PLANE BY PLANE to calculate the steady-state norms as each plane of
elements crosses the exit plane. This method should be used only for non-Eulerian analyses w ith
uniform planes of elements sequentially pa ssing the exit plane.
Set SAMPLING=UNIFORM to calculate the steady-state norms at an interval defined by the
time required for material to flow through an element of average length. This interval is determined
at the beginning of the step and remains constant throughou t the step. This met hod should be used
only for analyses with material flowing in and out of Eulerian boundary regions in the primary
direction.
Data line to define primary d irection and cutting plane position:
First (and only) line:
1. First direction cosine of primary direction.
2. Second direction cosine of primary direction.
18.33–1
ABAQUS Version 6.1 Module:
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