March 9, 2011


How Do I Investigate My RISA-3D Model Using the Deflected Shape?


When your RISA-3D model is not behaving as you anticipated, one of the best tools you have is viewing the deflected shape. Displaying the deflection graphically will help you visualize how the model is behaving and will often times bring to light modeling errors.

Turn on the deflected shape by clicking on the Result View Settings button on the Home tab.

Result View Settings

Or by clicking on the Deflection button found on the View Toolbar.

Deflection Toolbar

After the deflected shape is enabled, it is possible to increase the magnification factor of the deflection so that individual locations can be evaluated in more detail.

Deflection Tab

The deflected shapes pictured below illustrate two simple braced frames. These two images are a perfect example of how you can get seemingly good results including reactions, code checks and even Joint Deflections for both frames.

Deflection3

However, the right frame above shows that the beam is not connected to the column or brace. You need to display the deflected shape in order to catch this modeling error.


Tags: RISA-3D RISA-2D Instability

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