Response Dynamics > Random Base Excitation > Random base excitation results
Accurate and derived peak results
In post-processing, the software automatically computes and displays derived quantities for certain results types. For the peak and number of positive crossing random results, ignore these derived quantities as they are inaccurate.
Nodal vector peak and number of crossing results
The software automatically adds a Magnitude node under some nodal results. Ignore results associated to these nodes.
The random base excitation solver or the laminate dynamics solver correctly computes magnitudes for these quantities, which are displayed in the Post Processing Navigator using the word Magnitude in the results name. For example, when you request displacement, the correctly computed magnitude results are under the Displacement Magnitude [Peak] – Nodal node.
| Mode 1, 0Hz |
|---|
| Displacement [Peak] – Nodal |
| X |
| Y |
| Z |
| Magnitude |
| Rotation [Peak] – Nodal |
| Displacement Magnitude [Peak] – Nodal |
| Rotation Magnitude [Peak] – Nodal |
Stress and strain tensor peak and number of crossing results
Similarly, the software automatically adds derived stress and strain component nodes when you request stress and strain outputs. For example, for stress requests, the following elemental nodes are shown:
| Mode 1, 0Hz | |
|---|---|
| Stress [Peak] – Elemental | |
| XX | |
| YY | |
| ZZ | |
| XY | |
| YZ | |
| ZX | |
| Determinant | |
| Mean | |
| Max Shear | |
| Min Principal | |
| Mid Principal | |
| Max Principal | |
| Worst Principal | |
| Octahedral | |
| Von-Mises |
Ignore results associated to these nodes. The random base excitation solver or the laminate dynamics solver correctly computes these derived quantities, which are displayed in the Post Processing Navigator under the following result nodes:
Von Mises Stress/Strain [Peak] – Elemental
Max Shear Stress/Strain [Peak] – Elemental
Min Principal Stress/Strain [Peak] – Elemental
Max Principal Stress/Strain [Peak] – Elemental
Ply Stress/Strain [Peak] – Elemental
Ply Von Mises Stress/Strain (MID) [Peak] – Elemental
Ply Max Shear Stress/Strain (MID) [Peak] – Elemental
Ply Min Principal Stress/Strain (MID) [Peak] – Elemental
Ply Max Principal Stress/Strain (MID) [Peak] – Elemental
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Accurate and derived peak results, Simcenter 3D 2021.1 Series
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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/xid1932741 · retrieved 2026-07-17