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Truss structure optimization
Posted Dec 12, 2015, 1:30 p.m. EST Optimization, Studies & Solvers, Structural Mechanics Version 5.0 2 Replies
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hi all,
I'm kinda a newbie and i'm trying to optimize a simple 2D truss structure using optimization solver.
the objective function is total strain energy of the structure (mod1.truss.Ws_tot) and the constraint is total weight (mod1.mass1.mass).
control variables are a set of three length parameters of position of truss members and cross section area.
I read everything available on comsol documentation about optimization, but i still couldnt figure out how to use derivative based optimization algorithms to this model.
I think the problem is that my objective and constraint is indirectly related to control variables but i dont know how to connect them in the right way.
And i have deadline soon, any kind of help would be really appreciated.
Regards, Kosar
I'm kinda a newbie and i'm trying to optimize a simple 2D truss structure using optimization solver.
the objective function is total strain energy of the structure (mod1.truss.Ws_tot) and the constraint is total weight (mod1.mass1.mass).
control variables are a set of three length parameters of position of truss members and cross section area.
I read everything available on comsol documentation about optimization, but i still couldnt figure out how to use derivative based optimization algorithms to this model.
I think the problem is that my objective and constraint is indirectly related to control variables but i dont know how to connect them in the right way.
And i have deadline soon, any kind of help would be really appreciated.
Regards, Kosar
2 Replies Last Post Dec 13, 2015, 12:39 p.m. EST
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Posted:
9 years ago
Hi,
Even i am dealing with the same kind of optimization problem, but for CFD.
I have comsol support for this case, waiting for an reply.
But before that I would suggest you to split the problem and run without any constraints.
If u get any solution just post me to.
Even i am dealing with the same kind of optimization problem, but for CFD.
I have comsol support for this case, waiting for an reply.
But before that I would suggest you to split the problem and run without any constraints.
If u get any solution just post me to.
Please login with a confirmed email address before reporting spam
Posted:
9 years ago
Hi,
Even i am dealing with the same kind of optimization problem, but for CFD.
I have comsol support for this case, waiting for an reply.
But before that I would suggest you to split the problem and run without any constraints.
If u get any solution just post me to.
Splitting the problem is not a good option for me, i would appreciate it if you shared any reply from comsol support.
Best, Kosar.