calculate history of hystersis energy for 2d frame

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n_siahpolo
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Location: ACECR Institute for higher education-Ahwaz

calculate history of hystersis energy for 2d frame

Post by n_siahpolo »

Dear all
hi
I model 2d frame and run a nonlinear analysis for a prescribed ground motion. After all, I would like to calculate 4 part of input energy (kinetic, damping,elastic strain and hysteresis). So is there any way to calculate history of hysteresis and damping energy by Opensees?. I am familiar with Mat-lab so if there is any suggestion to help me to achieve this purpose, i will appreciate it in-advance. it is good to say I developed a simple code which is calculate input energy for SDOF and MDOF and I know that at free vibration phase of analysis, the input energy is equal to combination of damping and strain (elastic and inelastic) energy.
Tnx
fmk
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Re: calculate history of hystersis energy for 2d frame

Post by fmk »

if you are using fiber model, not really .. if you have a hing model you could record force-deformation of all hinges and sum up.
kavir
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Location: ghayen - Iran

Re: calculate history of hystersis energy for 2d frame

Post by kavir »

Hi
If I use distributed plasticity element (nonlin beam column ele) so for computing hysteresis energy, internal forces and deformation at witch section must be recorded for MATLAB post processing?
fmk
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Re: calculate history of hystersis energy for 2d frame

Post by fmk »

as mentioned it's not really possible for the fiber model .. unless you want to start looking at numerical integration.
kavir
Posts: 65
Joined: Thu Dec 19, 2013 6:47 am
Location: ghayen - Iran

Re: calculate history of hystersis energy for 2d frame

Post by kavir »

Hi Dear fmk
I write a numerical matlab code for calculating hysteresis energy. but i want a simple example of hysteresis energy ( Hysteresis energy of a portal frame) for validation of my code. i search in google but i do not found. can you help me?
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