Hello Wolfgang,
thanks for your message.
Currently,I tried to implement adding local stiffness matrix into global
stiffness matrix.
1.May I know which parameter can control the index of cells and add
the local stiffness matrix of cell into global matrix?
2.Whether is each cell matrix a kind of FullMatrix<double> and
local_dof_indices a local index parameter?
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
template <int dim,typename NumberType>
struct Assembler_Base
{
virtual ~Assembler_Base() {}
// Here we deal with the tangent matrix assembly structures. The
// PerTaskData object stores local contributions.
struct PerTaskData_ASM
{
const Solid<dim,NumberType> *solid;
FullMatrix<double> cell_matrix;
Vector<double> cell_rhs;
std::vector<types::global_dof_index> local_dof_indices;
PerTaskData_ASM(const Solid<dim,NumberType> *solid)
:
solid (solid),
cell_matrix(solid->dofs_per_cell, solid->dofs_per_cell),
cell_rhs(solid->dofs_per_cell),
local_dof_indices(solid->dofs_per_cell)
{}
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
I will appreciate it if you could provide any hint or suggestions.
I wish I could receive your reply.
Best regards
Lance
On Monday, June 12, 2023 at 12:43:40 AM UTC+2 Wolfgang Bangerth wrote:
> On 6/11/23 05:00, Lance Zhang wrote:
> >
> > If I want to describe a deformation when the rectangular cuboid object
> > receives a force F , how could I control the mesh moving during the
> force
> > deformation ? Should I use cell or node in the surface of rectangular
> cuboid
> > to represent the displacement?I s there any function in dealII for mesh
> control?
>
> Lance:
> You will want to read step-18.
> Best
> W.
>
> --
> ------------------------------------------------------------------------
> Wolfgang Bangerth email: bang...@colostate.edu
> www: http://www.math.colostate.edu/~bangerth/
>
>
>
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