Re: [Libmesh-users] Unusual memory error due to Eigen solver

b 13, 2020 at 5:58 PM John Peterson wrote: > > > On Thu, Feb 13, 2020 at 10:41 AM Roy Stogner > wrote: > >> >> On Thu, 13 Feb 2020, Bailey Curzadd wrote: >> >> > /usr/local/lib/libmesh_opt.so.0 >> >> Well, this is the first thing you'll

[Libmesh-users] Unusual memory error due to Eigen solver

I developed a code based on libMesh to optimize components subjected to extreme thermal loads. I use a gradient-based optimizer, and the optimization problem has lots of constraint functions, so I have to perform a direct sensitivity analysis where the two systems (thermal and static) both have to

Re: [Libmesh-users] Examples in topology optimization?

t, > Shawn > > On Sun, Jan 20, 2019 at 8:12 AM Bailey Curzadd > wrote: > >> I used libmesh for a topology optimization code I developed. What exactly >> are you looking for? What kind of optimization are you trying to implement? >> >> Bailey >> >&

Re: [Libmesh-users] Examples in topology optimization?

I used libmesh for a topology optimization code I developed. What exactly are you looking for? What kind of optimization are you trying to implement? Bailey On Sat, Jan 19, 2019 at 8:14 PM Yuxiang Wang wrote: > Dear all, > > Sorry for the spam - I am curious in whether anyone knows about if the

Re: [Libmesh-users] Periodic BCs for unstructured mesh

I to have the same tangential gradient, HI > forces AB and BC to have the same, BC forces HI and IJ to have the > same, IJ forces BC and CD to have the same, and so on, until instead > of having six degrees of freedom on that boundary you have only 2. > Do a uniform refinement and instead of 1

[Libmesh-users] Periodic BCs for unstructured mesh

Hi there, I'm using libMesh to calculate the homogenized properties of microstructures with cuboid unit cells. To do this, the boundaries of the unit cell require periodic boundary conditions. As far as I can tell, though, the PeriodicBoundary class only works with structured meshes, which isn't r

Re: [Libmesh-users] EquationSystems::init() takes an enormous amount of time with scalar variables

Hi John, Thanks for the advice. I looked into the alternatives you suggested, but discretizing the LMs as a field variable unfortunately causes me more headaches than it solves, so I’ve switched to the penalty method for now. I do have one suggestion to improve DofMap that should be relatively eas

[Libmesh-users] EquationSystems::init() takes an enormous amount of time with scalar variables

Hi there, I’m using libMesh to perform topology optimization on a mesh with a spherical surface. I only have a single LinearImplicitSystem. The normal displacement of nodes on the spherical surface needs to be constrained to force the surface to remain spherical. I am using Lagrange multipliers t