what does those WARNINGS mean

[gaohouzhi]

[size=18]OpenSees >wipe analysis
OpenSees >constraints Plain
OpenSees >numberer Plain
OpenSees >system BandGeneral
OpenSees >test EnergyIncr 1.0e-5 100
OpenSees >algorithm Newton
OpenSees >integrator Newmark 0.5 0.25
OpenSees >analysis Transient
OpenSees >rayleigh 0 0 0 0.1
OpenSees >analyze 500 0.02

Newmark::newStep() - domainChange() failed or hasn't been called
DirectIntegrationAnalysis::analyze() - the Integrator failed at time 0
OpenSees > analyze failed, returned: -2 error flag
-2[/size][/code]

[fmk]

it;s wipeAnalysis not wipe analysis .. the wipe space analysis is just like issuing the wipe command

[gaohouzhi]

[b][size=24]hi ,thank u very much for your reply .
i still cannt know the meanings of those WARNINGS
so i dont know the real questions in my model [/list][/b]

[fmk]

you don't have a model .. it got trashed when you issued the wipe command!