Re: [deal.II] 3D soild structure eigen problem

2022-03-29 Thread Wolfgang Bangerth
On 3/28/22 21:09, Léonhard YU wrote: I am constructing a code to solve the eigen problem of a solid structure,. I use the step-36 as a sample, but I don't know how to write a new one for 3D solid structure with tensil modulus E = 2.0e11, poisson ratio = 0.3 and density = 7.85e3. If you have an

Re: 与“[deal.II] Installation : MPI + Windows10 + MSVC 2019 building error”相关的私人帖子

2022-03-29 Thread Wolfgang Bangerth
On 3/2/22 19:52, Daniel Sun wrote:                   I have tried both (removing the "template" keywords and changing the definition to "const int dim"). Same errors occur.                   When i go to the definition of /cell->id()/, 2 matches found: class std::locale::id and class std::thre

Re: [deal.II] 3D soild structure eigen problem

2022-03-29 Thread Léonhard YU
Thanks for your reply, professor. I have constructed the stiffness matrix as step-18 does, but the difficulty is the mass matrix. I use these to construct mass matrix: 1) cell_mass_matrix(i, j) += rho * fe_values.shape_value(i, q_point) * fe_values.shape_value(j, q_point) * fe_values.JxW(q_poi