element joint2D problem

[chinaliu]

i use the joint2D element to do the simulation. the joint element node was 24 25 26 27 and when i run the process the message like this : time-varying constraint for node 24 none-varying assumed.
how to improve the syntax of the tcl script to make it run smoothly.
thanks

set IDpinching 4
set ePf1 [expr 10*$mm]
set ePd1 [expr 16*$kN]
set ePf2 [expr 24*$mm]
set ePd2 [expr 48*$kN]
set ePf3 [expr 36*$mm]
set ePd3 [expr 60*$kN]
set ePf4 [expr 120*$mm]
set ePd4 [expr 50*$kN]

set eNf1 [expr -10*$mm]
set eNd1 [expr -16*$kN]
set eNf2 [expr -24*$mm]
set eNd2 [expr -48*$kN]
set eNf3 [expr -36*$mm]
set eNd3 [expr -60*$kN]
set eNf4 [expr -120*$mm]
set eNd4 [expr -50*$kN]

set rDispP 0.5
set rForceP 0.25
set uForceP 0.05
set rDispN $rDispP
set rForceN $rForceP
set uForceN $uForceP

set gK1 1
set gK2 0.2
set gK3 0.3
set gK4 0.2
set gKLim 0.9

set gD1 0.5
set gD2 0.5
set gD3 2
set gD4 2
set gDLim 0.5

set gF1 1
set gF2 0
set gF3 1
set gF4 1
set gFLim 0.9

set gE 10

uniaxialMaterial Pinching4 $IDpinching $ePf1 $ePd1 $ePf2 $ePd2 $ePf3 $ePd3 $ePf4 $ePd4 $eNf1 $eNd1 $eNf2 $eNd2 $eNf3 $eNd3 $eNf4 $eNd4 $rDispP $rForceP $uForceP $rDispN $rForceN $uForceN $gK1 $gK2 $gK3 $gK4 $gKLim $gD1 $gD2 $gD3 $gD4

$gDLim $gF1 $gF2 $gF3 $gF4 $gFLim $gE cycle

element Joint2D 888 24 25 26 27 88 4 0 4 0 70 1

[chinaliu]

the problem was solved by the use of beam-column joint element.

this element may be used either in two or three dimensional problem.

thanks!

[Masoudahmadiiiii]

The element connects the external nodes to the central node via multi-point constraints, and Joint2D must be used along with either the Penalty or the Transformation constraint handler.