Different damping coeeficient in the regions

[pavlos]

Hi I am modeling a structure and I am trying to assign the different damping coeffcient for each element region using Region comanad and rayleigh. But for some reason I dont think it is working properly because when I print out acceleration the strucutre is oscilating like there is no damping. Do you know what can be the problem ?

#Regions
region 1 -eleRange 1 6 -rayleigh 4.5E-02 0.0 0.0 1.2E-03;
region 2 -eleRange 7 16 -rayleigh 0.0 4.12E-03 0.0 0.0;
region 3 -eleRange 17 19 -rayleigh 0.0 7.00E-03 0.0 0.0;
region 4 -eleOnly 20 21 22 23 103 -rayleigh 0.0 4.65E-04 0.0 0.0;
region 5 -eleOnly 102 -rayleigh 0.0 3.00E-06 0.0 0.0;
region 6 -eleRange 24 49 -rayleigh 0.0 2.55e-3 0.0 0.0;
region 7 -eleRange 50 75 -rayleigh 0.0 2.55e-3 0.0 0.0;
region 8 -eleRange 76 101 -rayleigh 0.0 2.55e-3 0.0 0.0;
this is how I have it defined

[selimgunay]

Did you check it against the case where you apply same damping to the whole structure?