how to calculate structure's energy
Moderators: silvia, selimgunay, Moderators
Re: how to calculate structure's energy
yes, i can.
But the stiffness matrix of structure with damper, that obtained from printA command,is correct?
Your tips are very helpful
But the stiffness matrix of structure with damper, that obtained from printA command,is correct?
Your tips are very helpful
Re: how to calculate structure's energy
in structure with viscoelastic damper, can I calculate the stiffness matrix with "printA" command?
the calculated answer with this method is correct?
integrator LoadControl 1
system FullGeneral
analysis Static
analyze 1
printA -file Stiff.out
wipeAnalysis
rayleigh 0.0 0.0 0.0 0.0
system FullGeneral
integrator NewmarkExplicit 0.5
analysis Transient
analyze 1 1.
printA -file mass.out
thanks
the calculated answer with this method is correct?
integrator LoadControl 1
system FullGeneral
analysis Static
analyze 1
printA -file Stiff.out
wipeAnalysis
rayleigh 0.0 0.0 0.0 0.0
system FullGeneral
integrator NewmarkExplicit 0.5
analysis Transient
analyze 1 1.
printA -file mass.out
thanks
-
- Posts: 913
- Joined: Mon Sep 09, 2013 8:50 pm
- Location: University of California, Berkeley
Re: how to calculate structure's energy
To get the stiffness matrix, 1) you can use
integrator Newmark 0.5 0.25
and set all the mass and damping to zero
2) or you don't need to modify mass and damping and use the displacementcontrol integrator.
integrator Newmark 0.5 0.25
and set all the mass and damping to zero
2) or you don't need to modify mass and damping and use the displacementcontrol integrator.
Re: how to calculate structure's energy
Are the commands coming below, correct?
do I have to write commands related to gravity loads and gravity commands before these?
integrator DisplacementControl 42 1 0.002
system FullGeneral
analysis Static
analyze 1500
printA -file Stiff.out
wipeAnalysis
system FullGeneral
integrator NewmarkExplicit 0.5
algorithm NewtonLineSearch
analysis Transient
analyze 1 1.
printA -file mass.out
thanks
do I have to write commands related to gravity loads and gravity commands before these?
integrator DisplacementControl 42 1 0.002
system FullGeneral
analysis Static
analyze 1500
printA -file Stiff.out
wipeAnalysis
system FullGeneral
integrator NewmarkExplicit 0.5
algorithm NewtonLineSearch
analysis Transient
analyze 1 1.
printA -file mass.out
thanks
-
- Posts: 913
- Joined: Mon Sep 09, 2013 8:50 pm
- Location: University of California, Berkeley
Re: how to calculate structure's energy
Reinforced concrete stiffness gets affected by gravity loading, so for RC you need to use gravity loading before these commands otherwise you don't need it.
Re: how to calculate structure's energy
is the following viscoelastice damper model correct?
is making the materials parallel correct?
uniaxialMaterial Elastic 1 16.77e6
uniaxialMaterial Viscous 2 2498e3 0.5
uniaxialMaterial Parallel 3 1 2
element twoNodeLink 67 8 16 -mat 3 -dir 1
thanks
is making the materials parallel correct?
uniaxialMaterial Elastic 1 16.77e6
uniaxialMaterial Viscous 2 2498e3 0.5
uniaxialMaterial Parallel 3 1 2
element twoNodeLink 67 8 16 -mat 3 -dir 1
thanks
-
- Posts: 84
- Joined: Tue Nov 07, 2017 7:47 am
- Location: University of Central Florida
Re: how to calculate structure's energy
Informative