Shear deformation of R/C column

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wangweiyi
Posts: 19
Joined: Mon Jun 15, 2009 5:41 pm
Location: hunan university

Shear deformation of R/C column

Post by wangweiyi »

Hello everybady!
I am modeling the response of a R/C cantilever column to lateral loading.
The total lateral deformation of the column is composed of three components,namely,flexural,bar slip,and shear deformation. By using fiber section and BARSLIP Material I can caculate flexural an bar slip deformation.

I read the manual and find that Section Aggregator command can be used to take shear deformation into account .

The problem is :
1)How to define relationship between shear force and shear strain of a R/C section . :o

2) The advantage of the fiber section is that moment and axial force coupling can be taken into account. I think the shear force and shear strain relations of a section which will be aggregated to a existing fiber section is under constant axial force .Am I right. Is there any conflict if we put them together?????
silvia
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Post by silvia »

the shear is uncoupled.
how you create the shear stress/strain relationship is up to you.
Silvia Mazzoni, PhD
Structural Consultant
Degenkolb Engineers
235 Montgomery Street, Suite 500
San Francisco, CA. 94104
wangweiyi
Posts: 19
Joined: Mon Jun 15, 2009 5:41 pm
Location: hunan university

Post by wangweiyi »

[quote="silvia"]the shear is uncoupled.
how you create the shear stress/strain relationship is up to you.[/quote]

Thanks silvia.
I think it is shear force/strain but stress/strain relationship ,right?
Of course I can create the relationship myself.The problem is how to analyse the section to define the relationship.
Can you guide me??
silvia
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Post by silvia »

yes, you are right, it is force versus strain.
i'd just use an elastic relationship...
Silvia Mazzoni, PhD
Structural Consultant
Degenkolb Engineers
235 Montgomery Street, Suite 500
San Francisco, CA. 94104
wangweiyi
Posts: 19
Joined: Mon Jun 15, 2009 5:41 pm
Location: hunan university

Post by wangweiyi »

[quote="silvia"]yes, you are right, it is force versus strain.
i'd just use an elastic relationship...[/quote]

elastic relationship?
Any body knows how to define inelastic relationship?
silvia
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Joined: Tue Jan 11, 2005 7:44 am
Location: Degenkolb Engineers
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Post by silvia »

any uniaxialMaterial can be used for the behavior
Silvia Mazzoni, PhD
Structural Consultant
Degenkolb Engineers
235 Montgomery Street, Suite 500
San Francisco, CA. 94104
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