How to implement a conical spring instead of cylindrical one in OpenSees?

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Shubhang
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Joined: Mon Sep 07, 2020 5:59 pm

How to implement a conical spring instead of cylindrical one in OpenSees?

Post by Shubhang » Wed Jun 16, 2021 5:36 am

I can implement a cylindrical spring which is simple linear by using the command ''uniaxialMaterial Elastic 1 $ks'', where $ks is the single specified stiffness of the linear spring. I need to implement a conical spring which will be multilinear with a different set of $ks1, $ks2, $ks3, etc at different force-deformation. ALSO, I want to avoid the use of if/else statements.
Thanks in Advance...
Any help will be highly appreciated.
Last edited by Shubhang on Wed Jun 16, 2021 4:56 pm, edited 1 time in total.

mhscott
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Location: Corvallis, Oregon USA
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Re: How to introduce a conical spring during modelling to get multilinear force deformation behaviour?

Post by mhscott » Wed Jun 16, 2021 6:17 am

What you are asking is unclear.

Shubhang
Posts: 9
Joined: Mon Sep 07, 2020 5:59 pm

Re: How to introduce a conical spring during modelling to get multilinear force deformation behaviour?

Post by Shubhang » Thu Jun 17, 2021 5:39 pm

mhscott wrote:
Wed Jun 16, 2021 6:17 am
What you are asking is unclear.
Sir, I have modified my previous post.

selimgunay
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Location: University of California, Berkeley

Re: How to implement a conical spring instead of cylindrical one in OpenSees?

Post by selimgunay » Fri Jun 18, 2021 12:23 pm

You can try use a hysteretic material to define the force-deformation of your spring: https://opensees.berkeley.edu/wiki/inde ... c_Material

Shubhang
Posts: 9
Joined: Mon Sep 07, 2020 5:59 pm

Re: How to implement a conical spring instead of cylindrical one in OpenSees?

Post by Shubhang » Sat Jun 19, 2021 6:38 pm

selimgunay wrote:
Fri Jun 18, 2021 12:23 pm
You can try use a hysteretic material to define the force-deformation of your spring: https://opensees.berkeley.edu/wiki/inde ... c_Material
Thankyou sir.

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