4. B modeling#
4.1. Characteristics of modeling#
The beam is cut into 2 parts of equal dimensions. Each substructure under consideration is meshed into segments to which elements of type POU_D_E are assigned.
The structure is studied using the substructuring method with « Craig‑Bampton » interfaces (blocked interfaces).
The base of the first 5 eigenmodes of the complete structure is calculated by substructuring. Then, the transitory problem, projected on this basis, is solved by the transient calculation operator by modal recombination.
4.2. Characteristics of the mesh#
Number of knots: 6
Number of meshes and types: 5 SEG2
4.3. Tested sizes and results#
I**identification** |
Reference |
Tolerance |
Euler integration schem |
||
Displacement (\(m\)) |
\(-1.85334E-06\) |
|
Speed (\({\mathit{m.s}}^{-1}\)) |
\(-4.63284E-03\) |
|
Devogelaere scheme |
||
Displacement (\(m\)) |
\(-1.85334E-06\) |
|
Speed (\({\mathit{m.s}}^{-1}\)) |
\(-4.63284E-03\) |
|
S 2nd order adaptive time step schem |
||
Displacement (\(m\)) |
\(-1.85334E-06\) |
|
Speed (\({\mathit{m.s}}^{-1}\)) |
\(-4.63284E-03\) |
|