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Thanks Silvia!

I would normally have done that, but unfortunately there is a blank space next to "Contact author" in the manual...

Hi all,

Is there any further documentation or references on Pinching4 and its parameters? Or are we limited to what is in the manual?

If there is, where can I find it?

Thanks,

/P

Hi, I've tried (unsuccessfully) to install OpenSeesSP on Windows Server 2008. I'm at the point where I can actually open OpenSeesSP and write commands... except that when I write: mpirun -np 4 OpenSeesSingleParallelInterpreter mymodel.tcl I get the message that mpirun is not a valid command. What co...

Problem solved!

Thanks for your answer.

Any idea as to whether or not ActiveTCL can be installed on Windows Server 2008?

Hi,

I am trying to install OpenSees and ActiveState tcl on a computer running Windows Server 2008 (64-bit) and things do not seem to work... can OpenSees run on 64-bit?

Sorry, the definition of my zeroLength should read as follows to correspond with the print element command shown:

element zeroLength 1 1 2 -mat 4 5 -dir 4 5 -orient 1 0 0 0 1 0;

Sorry about that, I'd been playing around with it and forgot to put -dir back to 4 and 5 before pasting it on here.

Hello, I have noticed something strange with OpenSees. I have a model of a tubular steel brace with gusset plates modeled at both ends as zeroLength elements (rotational springs). Displacements are imposed at one end of the brace to evaluate a buckling load, and buckling takes place in the XY plane ...

None that I can find... I'll try to get in touch with Dr. Elwood.

I'm assuming I should contact the author?

Quick question: the documentation on uniAxial material "limitCurve Axial" refers to figures. Where can I find these figures?

Thanks, Silvia! We've looked at it, but we don't see how we'd be able to assign zero stiffness between the time the bolt goes from one end to the other. We'd have to pass through (0,0), or the origin, every time we cycle. So far, we don't see how we'd be able to achieve this with Hysteretic. However...

Hello, A fellow student and I are trying to model the bearing deformations of a bolt hole using the Pinching4 uniAxial material. The behavior is essentially bi-linear, such that points 2, 3, and 4 are on the same line in the plastic range. Here is what we are trying to model, broken down into steps ...