Release 11.0 Documentation for ANSYS Workbench
DSVM20
Modal Analysis for Beams
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| Reference: | Any basic Vibration Analysis book |
| Analysis Type(s): | Modal Analysis |
| Element Type(s): | Beam |
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Two collinear beams form a spring mass system. The density of the longer beam is kept very low so that it acts as a massless spring and the smaller beam acts as a mass. The end vertex of the longer beam (acting as a spring) is fixed. The cross section details are as shown below.
Find the natural frequency of the axial mode.
| Material Properties | |||
|---|---|---|---|
| Material | E (Pa) | ν | ρ (kg/m3) |
| Spring | 1.1e11 | 0.34 | 1e-8 |
| Mass | 2e11 | 0 | 7.85e5 |
| Geometric Properties | Loading | ||
|---|---|---|---|
|
www.kxcad.net Home > CAE Index > ANSYS Index > Release 11.0 Documentation for ANSYS Workbench
| Results | Target | DS | Error (%) |
|---|---|---|---|
| Natural Frequency of Axial Mode (Hz) | 1188.6 | 1190.5 | 0.160 |
