Warning Message
Warning Message
(OP)
Hi! Evertyime I run a model I get the following warning:
"***WARNING*** THE SOLUTION LOST 6.7 DIGITS OF ACCURACY FOR DOF UZ OF JOINT 11484 LOCATED AT X = 1414.000, Y = 698.444444, Z = 1056.000, STIFFNESS MATRIX DIAGONAL VALUE = 2.6116E+10"
Why does this happen? What can I do to prevent this error?
Thanks in advance,
Monica
"***WARNING*** THE SOLUTION LOST 6.7 DIGITS OF ACCURACY FOR DOF UZ OF JOINT 11484 LOCATED AT X = 1414.000, Y = 698.444444, Z = 1056.000, STIFFNESS MATRIX DIAGONAL VALUE = 2.6116E+10"
Why does this happen? What can I do to prevent this error?
Thanks in advance,
Monica





RE: Warning Message
Amadeus
RE: Warning Message
The remedy is to introduce more restraints or connect the offending member.
I hope this helps,
RE: Warning Message
just getting a hang of etabs 8.2.7..and was trying with various ways of modelling slab/shear wall/wind etc..
if one area is drawn for the whole floor (bldg has columns and c shaped shear walls ) and auto mesh area into structure is cliecked (with say 4'X4' meshing enforecd) and voila! etabs does it..as per mr habibulla you can enforce auto-line constrain and not worry about meshing not being compatible in the tradional sense..in fact as per habibulla the shell stress contour may jump across elements but largely ok..so far so good..but analysis will often yield some error due to, in my opinion, this "fudgy" meshing..
i tried inpputing random columns, with no walls, and did auto meshing and the program did not even acknowledge if some columns where there.. irritated, i did bay-by-bay auto meshing by manually drawing null lines connecting the columns and meshing looks much better..i merged all the areas to make one diaphragm..results seem much better on that..
so the auto meshing isn't really auto..and meshing by the progrem is still quite often not correct...
tell me what you think about it..
ths andiron
RE: Warning Message
RE: Warning Message
You can check gloabl force envelope to see the percentage of error in loading.
I can see this certainly meshing problem.