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I define a mehanny damage model for my joints in a lumped plasticity model based on the appendix of Altoontash thesis but the numbers I get are so small like the building undergoes a negligible damage (numbers around 0.1-0.1 !!) although i use very strong motions with 2400yr reurn periods. does anyo...

I have defined ParkAng damage model and used it in the joint2D model (based on Altoontash dissertation). but do not know how to define the proper recorder to get the final damage index. how can I do it?

I just saw your message. here is the error i get from my model:

Domain::addMP_Constraint - cannot add as constraint with tag9already exists in modelJoint2D::addMP_Joint - WARNING could not add equalDOF MP_Constraint to domain WARNING Joint2D::Joint2D(): can not generate ForJoint MP at node 1

I bring an example here: (this is not my model. my model is a lumped plasticity model) in this model if you ignore only the 4 equalDOF command lines there will be no error for the Joint2D s although the nodes constrained together by equalDOF have no kind of connection or relation to the joint nodes....

I have not defined any constraints for any of the nodes around joints

the above mentioned errors have caused my model from being built properly because the eigen analysis cannot be performed. the only problem I have are the Joint2D s. do you have any idea how joint problem can be solved? I have defined 4 nodes around the joint. in the Joint2D definition I give each no...

the problem is with the joint2D. if you eliminate the joint2D and make the 4 nodes around every joint only 1 the problem will be solved ! this may change your model completely though ! this is the same problem I have with the Joint2D and is driving me nuts. I have not found any solution to Joint2D i...

Hi Alireza jan I always get errors regarding the MP constraint in the joints. I don know how to tackle that. equalDOF is the proper command for that; but i don't know "where" to use it. because as I know, I have to constrain the 4 nodes around the joint to the center node but the center no...

@ talebian: I think this is helpful for you:

opensees.berkeley.edu/community/viewtopic.php?t=12528&highlight=joint

how damage models can be implemented for elements