Optimize cross section

Replies to This Discussion

Permalink Reply by Karamba3D on November 2, 2016 at 1:52pm

Dear Ibrahim,

the 'Optimize Cross Section'-component first chooses the cross sections in such a way that under the given loads they satisfy the limit load criteria according to Eurocode 3. In case that a maximum displacement is prescribed by the user, a second step consists of increasing the cross sections appropriately. For details please see the manual.

In order to retrieve the cross sections of each finite element disassemble the model that comes out of the optimization ('Disassemble Model'-component), then disassemble the elements ('Disassemble Element'-component).

Best,

Clemens

Permalink Reply by Ibrahim on November 3, 2016 at 1:46am

Dear Clemens,

Thank you for your reply,

I wasn't aware of the disassemble components ..

Concerning the cross section optimization it is done according to EC3 in case of steel elements, what if the element is concrete, would it be done according to EC2 ? You know EC3 it just for steel design not concrete ... So the component will be aware to switch to EC2 if the section was concrete ?

Thanks.

Permalink Reply by Karamba3D on November 3, 2016 at 2:48pm

Dear Ibrahim,

in Karamba 1.2.2 the EC3 procedure is the only option. In order to estimate the feasability of reinforced concrete members one would have to work with a reduced concrete strength (using the EC3 procedure).

The calculation ot the reinforcement has to be done in a second step on the basis of the calculated cross section forces using programs such as INCA2 (see http://www.u-pfeiffer.de/inca2/inca2-09.html) or Response2000 (see http://www.ecf.utoronto.ca/~bentz/r2k.htm) or others.

Best,

Clemens