Assigning nonlinear stress-strain curve in hinge property data

[alok__k]

Hi guys,
I am trying to model masonry infill walls using single strut model with plastic hinges.
I have defined corresponding non-linear stress strain curve in hinge property data. However the analysis is showing error- Invalid nonlinear stress strain curve?
What are the features if any the curve should have to run? Suggest references if any.
Thanks.

 

[mronlinetutor]

a single strut model cannot be used because there is no compression strut and ties. the infill panels will break apart without holding all the parts together. try a compression strut at third points on the top and a tie at third points below the top and trusses below the tie.

a good reference would be "Finite element design of concrete structures" by G. A. Rombach.


disclaimer: all calculations and comments must be checked by senior engineers before they are taken to be acceptable.