Recorder ?

[Cathy]

Hello everyone! Please help me out
In the manual,Node Recorder command is that
recorder Node <-file $fileName> <-time> <-node ($node1 $node2 ...)> <-nodeRange $startNode $endNode> <-region $RegionTag> <-node all>
-dof ($dof1 $dof2 ...) $respType

-time : this argument will place the pseudo time of the as the first entry in the line. (optional, default: omitted) but i can't exactly understand the time !

question 1:
in the pushover or reverse lateral load ,is the time "time step";in the dynamic analysis,is the time "time interval"? or other mean ?

for the commmand:recorder Node -file RCyclic.out -time -node 2 -dof 1 2 disp , what dose every arrays' data stand for?

question 2: which two arrays data compose hysteretic curves ?

[silvia]

time is the analysis time, whether static or dynamic, you are imposing a time-proportional load.

the recorder output depends on the recorder, you can use the -xml feature instead of -file to get the header.
also, always do use -time, please.

[Cathy]

Thanks silvia! but now i am puzzled. time is the analysis time, whether static or dynamic. then,should the analysis time be positive? but
recorder Node -file RCyclic.out -time -node 2 -dof 1 2 disp , some part of out data is :
-0.035528 0.0001 2.39744e-006
-0.0722387 0.0002 5.68205e-006
-0.121565 0.0003 1.00934e-005
-0.158772 0.0004 1.34022e-005
-0.199017 0.0005 1.69654e-005
-0.240152 0.0006 2.07147e-005
-0.287061 0.0007 2.56941e-005
-0.313599 0.0008 2.99991e-005
-0.339639 0.0009 3.55647e-005
-0.353037 0.001 4.19447e-005
-0.318731 0.0009 3.77222e-005
-0.282981 0.0008 3.33658e-005
-0.24723 0.0007 2.90094e-005
-0.211479 0.0006 2.4653e-005
-0.175728 0.0005 2.02966e-005
-0.139977 0.0004 1.59402e-005
-0.104226 0.0003 1.15838e-005
-0.0684747 0.0002 7.22736e-006
-0.0327238 0.0001 2.87104e-006
0.00205286 8.80914e-019 -1.21608e-006
0.0455887 -0.0001 -5.11443e-006
0.0891896 -0.0002 -9.02478e-006
0.132658 -0.0003 -1.29396e-005
0.1759 -0.0004 -1.68697e-005
0.218927 -0.0005 -2.08217e-005
0.261708 -0.0006 -2.47834e-005
0.30325 -0.0007 -2.85516e-005
0.342238 -0.0008 -3.18262e-005
0.376732 -0.0009 -3.41421e-005
0.406831 -0.001 -3.54425e-005
0.365671 -0.0009 -3.20693e-005
0.324515 -0.0008 -2.86963e-005
0.283358 -0.0007 -2.53234e-005
0.242201 -0.0006 -2.19505e-005
0.201045 -0.0005 -1.85775e-005
0.159888 -0.0004 -1.52046e-005
0.118731 -0.0003 -1.18317e-005
0.0775746 -0.0002 -8.45873e-006
0.0364179 -0.0001 -5.08581e-006
-0.00129659 8.40257e-019 -1.48027e-006
-0.0366024 0.0001 2.81134e-006
-0.0722444 0.0002 7.14176e-006
-0.107886 0.0003 1.14721e-005
-0.143528 0.0004 1.58025e-005
-0.17917 0.0005 2.01329e-005
-0.214812 0.0006 2.44633e-005
-0.250454 0.0007 2.87937e-005
... ...
why does the first array have positive and negative datas?

[silvia]

because it is proportional to the load.
if the increment is negative, you get negative. it is not time, it is pseudo-time.