Pre-Stressed Vibration Analysis

Workshop 5.2 - Goals

-Our goal is to simulate the modal response of the tension link (shown below) in both a stressed and unstressed state.

-Specifically, we will load the link with a 4000 N tensile load and compare the natural frequency to that of the unloaded component.

Workshop 5.2–Project Schematic

1.Double click Static Structural in the Toolbox to create a new system.

2.Drag/drop a “Modal” system onto the “Solution” cell of the static structural system.

-When the schematic is correctly set up it should appear as shown here.

-The “drop target” from the previous page indicates the outcome of the drag and drop operation. Cells A2 thru A4 from system (A) are shared by system (B). Similarly the solution cell A6 is transferred to the system B setup. In fact, the structural solution drives the buckling analysis.

Verify:

-Project units are set to “Metric (kg, mm, s, C, mA, mV).

-“Display Values in Project Units” is checked (on).

3.From the static structural system (A), RMB the Geometry cell and “Import Geometry”. Browse to the file “tension_link.x_t”.

4.Double click the “Model” cell to open the Mechanical application.

Workshop 5.2 - Setup

5.Set the working Unit System:

-Units > Metric (mm, kg, N, s, mV, mA)

6.Apply supports to the model (highlight “Static Structural” (A5):

a.Highlight one of the inside faces of one washer “RMB > Insert > Fixed Support”.

b.Highlight the face on the rim of the other washer “RMB > Insert > Frictionless Support”.

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