"ElasticPPGap" : How to randomize the gap

[bayram_aygun]

Hi,

Let's say I have the following situation:

# tag K Fy gap
uniaxialMaterial ElasticPPGap 400 6368 -637 [expr $gap]

uniaxialMaterial ElasticPPGap 401 2190 -9e9 [expr $gap-0.1418]

# Combine them
uniaxialMaterial Parallel 12 400 401; # Internal gaps
uniaxialMaterial Parallel 13 402 403; # Abutment gaps

# tag i-node j-node material X
element zeroLength 6000 3420 200 -mat 13 -dir 1

How can I use "randomVariablePositoner" command and randomize the "$gap" parameter?

I was thinking of something like this:

randomVariablePositioner 1 -createRV3 lognormal [expr $gap] [expr $cov*$gap] -element 6000 -material ????

Thanks a lot for your time,

[mhscott]

The EPPGapMaterial has not been "parameterized", thus you cannot use random variable positioners, reliability, etc. with this model.