Optimisation App in MATLAB

[Melad Saad]

Hi Experts

Thank you for sharing your knowledge and experience with us...
I have been struggling about Optimisation tool in Matlab

I am working on Design optimisation of steel space structures.
I have coded the analysis and design of the structure in MATLAB. The analysis was coded by using STIFFNESS METHOD. As you might know that there are 107 Universal Beams and 64 Universal Columns. All these are variables. However, these variables are applicable for each individual member of the structure, so I can be able to find the minimum weight after the achievement of the Cross Sectional Resistance.


Can you please give me a clue on how to use the optimisation App to solve my problem. It will be appreciated if you could provide me with a source or a private expert so I can contact.


Many thanks

 

[IRstuff]

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[GregLocock]

I have done a roughly similar exercise, using Matlab and OpenFem. Mine was a pure spaceframe, ie everything in axial load. Therefore I could order my section choices by area. So if section 3 was too small I could go to section 4, and so on.

I don't think the optimiser will help much with that approach.

One other approach would be to design the best structure with no constraints on section shape, and then select sections that exceed those requirements for each member. This will be non optimal, perhaps a second round of optimisation on the heaviest members only might be worthwhile.





Cheers

Greg Locock


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