Dear Vishvas Patil,
I am sorry but could you give me more explanation about "pre-hinges"?
Hello,
I don't understand the question exactly. Please provide more details on what you are trying to do and what you mean by "pre-hinges". In any case, for nonlinear time history analysis you had better use pre-defined fiber hinges, which are useful for defining coupled axial and biaxial-bending behavior in frame objects. They are ideal for dynamic behavior since they capture nonlinear hysteretic effects. In this approach, the cross section is discretized into a series of representative axial fibers which extend longitudinally along hinge length. Depending on the material in its tributary area, each fiber has its own stress-strain relationship.
Vagelis Plevris
Dear Patil,
Yes you have to define non linear hinges before carrying out nonlinear time history analysis. As mention by Mr. Plevris you have to use fibre approach to get hinge properties. I would recommend you to use XTRAT software for hinge properties. This software have Mander unconfined and confined concrete model as well as different steel models. With these hinge properties you will be able to get good response and hystersis.
Thanks
Ajmal
Can anyone help me with modeling fiber hinge in SAP 2000 for a circular column section
Dear Amina,
You can request student trial version from the following website. Usually trial version is for 6 months for students.
http://www.trcbridgedesignsoftware.com/index.html
Best regards,
Ajmal
Yes, I think it is required if you want to consider direct integration method. However, It is time consuming. Another way is FNA (first non linear analysis). Please note that, you won't be able to investigate hinge behavior.
Yes, it is necessary define pre-hinges prior to time-history analysis to study damage patterns.
Amina Chebihi you can use this one https://www.engissol.com/interaction-diagram-composite-column-cross-section-analysis-design-software-application.html that is similar and offers a free version to students
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