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Oasys LS-DYNA Environment
Release Notes
Version 9.4.2
Where coincident shells are found LS-DYNA prefers the thinnest for contact purposes.
PRIMER now replicates this behaviour.
Note that PRIMER can still report different initial penetrations than LS-DYNA – possible reasons
include:
LS-DYNA corrects penetrations (by moving nodes) in the order that they are found, often leading to
different results when checking subsequent nodes/segments
SOFT=2 and IGNORE=1 prevent LS-DYNA from reporting any initial penetrations.
• Case 12767
PRIMER may give an incorrect error message if setting a SOFT value on optional card A of a
_TIEBREAK contact.
Contour
• Case 14292
When *SECTION_SHELL specified elform=0, Primer was contouring this part as elform=2. This is
not correct if the *CONTROL_SHELL option THEORY is otherwise set.
• Case 13809
'Discrete' contour bands were introduced in PRIMER 9.3 for some contourable data, in which a
linear contour ramp was replaced with a series of 'discrete' values showing only the values actually
present in the model.
There was an error in the display of these which meant that while the original contour plot would
always be correct, subsequent blanking (or anything else which changed what was displayed) might
generate a revised set of contour bands but the plot itself would not be updated to assign the new
colours.
This would not always happen (it would depend upon the details of the change in the contour
bands), and a workaround was to click on CT or SI which would redraw the plot correctly.
Blanking or other operations which change the contour bands of 'discretely contoured' plots will now
redraw the model in the correct colours if this is required.
• Case 13537
The plotting of plastic strains within PRIMER could be slow in larger models. The speed of the
plotting has been improved.
• Case 13226
A bug that would result in incorrect plotting of currently added mass in the 'Modify Assign Mass'
panel.
• Case 13180
The colour of the 'Levels' sliders in all 'Contour Level Settings' panels have been changed from
white to black.
• Case 12278
When data is contoured in PRIMER the SETTINGS panel gives various options for controlling what
is seen, for example culling items below or above selected contour levels, or uncomputed or rigid
items.
This worked correctly, but:
5. the ‘autoscale’ process then wrongly continued to consider entities that had been culled
from a contour plot.
Page 29
Ove Arup & Partners Ltd
19 October 2010