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I have included an inelastic Joint2D element in my RC moment frame building for RC BC joints. My moment frame has seismic and gravity loading,

A. Which option is correct?

Option 1. Is the RC BC joint modeled as a parallelogram considering shear deformation is more critical than flexural deformation? OR

Option 2. Is the RC BC joint modeled as a parallelogram considering shear deformation is more than flexural deformation?

B. Why can't we model the RC BC joint for flexural deformation? Is it related to more deformation or critical deformation? or critical forces?
Here critical means that cause permanent failure even without loading

C. If there is only gravity loading, we need not model the RC BC joint as a parallelogram. We can model it as a trapezium, right?

Kindly reply.

Hi Everyone,

Which is the best uniaxial material to use for FRP in a rectangular RC section?

Kindly share the details as I have to calibrate FRP Confined rectangular section.

Please help. I am in urgent need of it.

Thank you.

Kaustav Sengupta

Hi Everyone,

Which is the best uniaxial material to use for FRP in a rectangular RC section?

Kindly share the details as I have to calibrate FRP Confined rectangular section. Please help.

Thank you.

Kaustav Sengupta

Dear Users,

I have received an error while running gravity analysis. The error is given below.

invalid command name "pattern"
while executing
"pattern Plain 1 Linear {
#Distributed beam element loads
eleLoad -ele 20501 20502 20503 -type -beamUniform -0.14771161..."

Please suggest what to do!

Thank you.

Regards,
Kaustav Sengupta

Dear Users,

Can someone help me with the number of fibers required in y and z direction of a force based nonlinear beam-column element?

I have tried several values but I am having issues in the response in pushover analysis, specifically post yielding region. It has a lot of serrations and it is stopping way before the maximum drift.

Thank you.

Regards,
Kaustav Sengupta

gopaladhikari wrote:
> I m getting this error when evoke close command.
>
> can not find channel named
> "OutputData/DAPout/sectionFiber/caseID201/Eigen1.wri"
> while executing
> "close "$DAPout/Eigen$j.wri""

HI MR. GOPALADHIKARI,

I AM FACING SIMILAR PROBLEM WHILE RUNNING MY CODE. THE ERROR I AM GETTING IS - can not find channel named "filea07128"

WHAT EXACTLY DID YOU DO TO SOLVE THE PROBLEM? CAN YOU HELP ME IN THIS REGARD?

THANK YOU.

REGARDS,
KAUSTAV SENGUPTA

Dear Users,

I am facing an error while running an Opensees code. The error shown is - can not find channel named "filea07128"

Please help me rectify the error.

Thank you.

Kaustav

Thank Sir. It is a website. Is there any other reference document?

Dear Users,

I want to know what is the reference document for uniaxial hysteretic material for reinforcement steel. I have searched but not able to find any document to explain the behavior of hysteretic material. Kindly help me in this regard.

Thank you.

Dear Users,

I want to know what is the reference document for uniaxial hysteretic material for reinforcement steel. I have searched but not able to find any document to explain the behavior of hysteretic material. Kindly help me in this regard.

Thank you.

Respected Users,

I have tried to calibrate joint2D element as per PEER22 joint model. But my response is not matching at all. The response is higher and drift at maximum response is not matching.

Please help me in this regard.

Regards,
Kaustav Sengupta

Dear Users,

I am modelling a cantilever column using fiber section and nonlinear beam-column element for flexural calibration under lateral load. While using effective stiffness in the model, can I use elastic slip spring too?

Thank you.

Regards,
Kaustav Sengupta

Thank you.

Dear Users,

Which is the best reinforcement steel model for including cyclic and inclyclic deterioration ?

Thank you.

Dear Users,

I am trying to calibrate flexure critical columns (with fiber section). I am modelling concrete and steel (reinforcement) with Concrete02 and SteelMPF respectively. When I am using SteelMPF uniaxial material for modelling reinforcement material, it showing the following error - "couldnot create uniaxial material"

Please suggest a solution to use the material or suggest an alternative for the material.

Thanks and regards,
Kaustav Sengupta