Hyster_1

ncatella · Post by **ncatella** » Thu Apr 07, 2005 10:17 am

When I try to create the bilinear hysteretic material, Hyster_1, OpenSees returns
WARNING could not create uniaxialMaterial Hyster_1
As far as I can tell, my syntax is correct. So what is going wrong?

silvia · Post by **silvia** » Thu Apr 07, 2005 11:00 am

please show us your syntax!
also, what else does the warning say?
I have been able to use it!

ncatella · Post by **ncatella** » Thu Apr 07, 2005 12:43 pm

This is the syntax that I have been using in the input file:

uniaxialMaterial Hyster_1 1 52.5 .0018103 60 .05 -52.5 -.0018103 -60.
-.05 0 0 0 0

the only thing that the error message reads is:
WARNING could not create uniaxialMaterial Hyster_1

thanks

silvia · Post by **silvia** » Thu Apr 07, 2005 1:02 pm

mine is not able to create Hyster_1 either, i'll look into whether this one exists.

you should refer to the manual, but here is the proper command, not Hyster_1:

uniaxialMaterial Hysteretic $matTag $s1p $e1p $s2p $e2p <$s3p $e3p> $s1n $e1n $s2n $e2n <$s3n $e3n> $pinchX $pinchY $damage1 $damage2 <$beta>

this one exists and OpenSees is able to build it!

ncatella · Post by **ncatella** » Mon Apr 11, 2005 11:54 am

What then is the uniaxial material in the Command Manual that is called Hyster_1 ? Has that not been added to OpenSees yet?

silvia · Post by **silvia** » Mon Apr 11, 2005 2:06 pm

I believe it has just been taken over by the other hysteretic material command.

cctvcctv · Post by **cctvcctv** » Sat Jun 04, 2005 5:17 pm

each time, i tried to use this command:

it will said: invalid command name "uniaxialMaterial "

silvia wrote:mine is not able to create Hyster_1 either, i'll look into whether this one exists.

you should refer to the manual, but here is the proper command, not Hyster_1:

uniaxialMaterial Hysteretic $matTag $s1p $e1p $s2p $e2p <$s3p $e3p> $s1n $e1n $s2n $e2n <$s3n $e3n> $pinchX $pinchY $damage1 $damage2 <$beta>

this one exists and OpenSees is able to build it!

silvia · Post by **silvia** » Sun Jun 05, 2005 7:42 am

before you can use any OpenSees Commands, you need to define the system using the model command, did you do this?