i need some help

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jboshra
Posts: 16
Joined: Mon Dec 29, 2008 12:46 am

i need some help

Post by jboshra »

Dear Sir,
I have a problem in using minmax material, I can’t define the min & max values that I can use to get failure in the material after a certain strain. I used:
uniaxial material concrete01 1 -2500 -.002 -2800 -0.01
uniaxial material concrete01 2 -2500 -.002 0 -0.005
uniaxial material steel01 3 35153 20389019 0.01
Would you please tell me what are the recommended min values and max values for both concrete and steel materials? Why did you recommend these values? (Please explain).
silvia
Posts: 3909
Joined: Tue Jan 11, 2005 7:44 am
Location: Degenkolb Engineers
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Post by silvia »

you have to chose those values based on your own goals and research
Silvia Mazzoni, PhD
Structural Consultant
Degenkolb Engineers
235 Montgomery Street, Suite 500
San Francisco, CA. 94104
jboshra
Posts: 16
Joined: Mon Dec 29, 2008 12:46 am

Post by jboshra »

Dear ,
Sorry my question wasn’t clear
The problem is:
1)I am using the minmax material and I want to know what do min and max words represent in this code.
uniaxialMaterial MinMax 4 1 min – max -

2) Are there any constraints for the min and max values used in the minmax material due to the definition of the material properties in the opensees code.

Material properties:
tag f'c ec0 f'cu ecu
Uniaxial material co ncrete01 1 -2500 -.002 -2800 -.01
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