Updating Command Language Manual

[silvia]

i am updating the command-language manual.
any recommendations on needs and clarifications would be appreciated.

[avytin]

> in the recorder specify the option to choose a recording timestep:
-dT $dt

> Specify that the zerolength elements can only connect 2DOF nodes.

> indicate how to remove recorders
(e.g.
set a [recorder $arguments]
remove a
)

> Also discuss removing fixities.

>Indicate that the model basicbuilder command can be used many times in our model to define different DOF regions.

>Indicate how can one apply pore pressure conditions conditions in the UCSD quad-up elements:
set Timeseries24 "Constant -factor 134.56"

pattern MultipleSupport 2 {
groundMotion 24 Plain -vel $Timeseries24
imposedMotion 24 3 24
}

>I think there is no documentation on the multiaxialcyclic plasticity model (there is the relevant info in the source files)

>setTime command

>loadconst command

[silvia]

thank you

about the last 2, they are under miscellaneous commands

also, some elements and features are not documented officially as either the documentation has not been provided or the features have not been tested fully.


thank you

[silvia]

for "Indicate how can one apply pore pressure conditions conditions in the UCSD quad-up elements:
set Timeseries24 "Constant -factor 134.56"

pattern MultipleSupport 2 {
groundMotion 24 Plain -vel $Timeseries24
imposedMotion 24 3 24
}
"

can you please be specific as to which elements (where should i put it into the manuaL)

thank you!

[gopaladhikari]

Dear Silvia

Could you please add something about damage model and recorder.

secondly, there were some discussion about the parameters for HHT integrator.
please confirm the exact definition of parameters.

thanks

gopal

[silvia]

is there a damage model and recorder?

[gopaladhikari]

yes.

[url]
http://opensees.berkeley.edu/OpenSees/a ... Model.html
[url]
check this link

[hugo.esquivel]

Silvia! The geomTranf command for a 3d model! I'll really appreciate any improvement in this part of the manual.

PS: also, change this sentence:
"The local y-axis is defined by taking the cross product of the x-axis and the vecxz vector."

by this one:
"The local y-axis is defined by taking the cross product of the vecxz vector and the x-axis."

Since,
---------------------------
local y-axis := vecxz [crossProduct] local x-axis;
---------------------------

Thanks in advance.

[avytin]

For the UC San Diego Soil Elements
> FourNodeQuadUP elements

I haven't tried it on the other three UCSD soil Elements but since for all the four elements the velocity of the third DOF is the pore pressure then it should work for all four.

To set pore pressure to be $p at node $NodeID then one should write:

set Timeseries "Constant -factor $p"
pattern MultipleSupport 1 {
groundMotion $GMID Plain -vel $Timeseries
imposedMotion $NodeID 3 $GMID
}


-------------------------
for "Indicate how can one apply pore pressure conditions conditions in the UCSD quad-up elements:
set Timeseries24 "Constant -factor 134.56"

pattern MultipleSupport 2 {
groundMotion 24 Plain -vel $Timeseries24
imposedMotion 24 3 24
}
"

can you please be specific as to which elements (where should i put it into the manuaL)

thank you!

[hugo.esquivel]

Hi Silvia. Now it seems that in OpenSees v2.0, the rigidLink command doesn't accept the argument "rod" but "bar".

Thanks in advance.