[Libmesh-users] [RB] Find the minimum eigenvalue using A_q and B_q in the RB system.

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Hello, all.

 

I try to solve an eigenproblem with the linear elasticity and find the
minimum eigenvalue in the RB system

Of course, I may create another libMesh code that solve only the
eigenproblem, but I want to utilize A_q and B_q already made by the RB
system. First of all, I referred to the libMesh code, "RBSCMConstruction,"
however, I do not know how to load the matrices and solve the eigenproblem
in my RB code.

 

My questions are as follows:

1.	Given the specific(constant) parameter, is there any simple
way(code) to find the minimum eigenvalue in the RB system?
2.	How to obtain matrices, A_q and B_q, including theta for the
specific parameter? In other words, how to get the full matrices, A and B
used in the RB system?

 

It would be greatly appreciated if you could give me some examples or codes
for reference.

 

I look forward to your reply.

 

Thank you.

 

Regards,

SKang