4. B, D models#
4.1. Characteristics of the models#
The plate is modelled in \(\mathrm{2D}\) in plane deformations, by QUAD4 elements. The springs are modeled by seg2 assigned a 2D_dis_T modeling whose characteristics are k_t_d_l. They are translational discretes having a diagonal matrix, see the documentation for affe_cara_elem.
Modeling B uses behavior DIS_CHOC, modeling D uses behavior DIS_CONTACT.
4.2. Characteristics of the mesh#
The plate is cut with \(\mathrm{ny}=16\). The length of the plate is \(b=2m\).
4.3. Tested sizes and results#
For time step No. 1, the movements of the ends of the springs, which are not connected to the plate, are imposed at zero. The results of*Code_Aster* are compared with the discrete solution, which corresponds to the solution of the modelled problem. The equilibrium solution is obtained for \(n=12\), equation.
Nature of results |
\({U}_{A}\) |
|
Ongoing solution |
\(\frac{-4}{1125}\) |
|
Discreet solution (\(n=12\)) |
\(\frac{-208}{58875}\) |
|
Tolerance |
\(1.0E-04\) |
|
For time step No. 2, the movements of the ends of the springs, not connected to the plate, are moved by \(+5.0E-03m\). The results of*Code_Aster* are compared with the discrete solution, which corresponds to the solution of the modelled problem.
Nature of results |
\({U}_{A}\) |
|
Ongoing solution |
\(\frac{-4}{1125}+\frac{5}{1000}\) |
|
Discreet solution (\(n=12\)) |
\(\frac{-208}{58875}+\frac{5}{1000}\) |
|
Tolerance |
\(1.0E-04\) |
|