This section explains how to examine and modify analysis models. Click Analysis > Analysis
& Design Models... and use the Analysis & Design Models dialog box.
If the analysis model has imperfection loads, Tekla Structures automati-cally creates load combinations with both the positive and negative direc-tions (x and -x, or y and -y).
Checking objects contained in an analysis model
To check which parts and loads an analysis model contains:
1. Click Analysis > Analysis & Design Models....
2. In the Analysis & Design Models dialog box, select a model.
3. Click the Select objects button. Tekla Structures highlights and selects the parts and loads in the physical model.
Adding or removing analysis objects
As well as changing the properties of an analysis model, you can also modify existing analysis models by adding and removing objects.
To add or remove parts and loads:
1. In the physical model, select the parts and loads to add or remove.
2. Click Analysis > Analysis & Design Models....
3. In the Analysis & Design Models dialog box, select a model.
4. To add the objects to the analysis model, click Add selected objects.
5. To remove the objects from the analysis model, click Remove selected objects.
Showing analysis models and support conditions in model views
You can visually check analysis models in Tekla Structures, and make corrections if needed, before actually running the analysis and using the analysis application. This is particularly useful with large models, when the analysis may take some time.
To have Tekla Structures show an analysis model in a Tekla Structures model view:
1. Click Analysis > Analysis & Design Models....
2. In the Analysis & Design Models dialog box, select a model.
Adding and removing objects changes the analysis model status to out of date, so you must run the analysis again. See also Analysis model status (p. 81).
3. If the analysis is not yet run, click the Create model button. Tekla Structures creates the analysis model.
4. Click the Show in model button.
Tekla Structures shows the analysis members and their identification numbers, nodes, rigid links, and support conditions using the following colors and symbols:
Object Color Image
Node Magenta
Rigid link Dark blue
Normal member (Beam) Red
Truss member Green
Truss member – Tension only
Violet Truss member –
Compression only
Yellow
Composite beam Gray
Plate, slab, or panel edge Light blue
To hide the analysis model from the model view, right-click the view and select Redraw View from the pop-up menu.
To show all member types and to permanently hide member or node numbers or support conditions from model views, set the following variables to FALSE in Tools > Options >
Advanced options... > Analysis & Design:
•
XS_AD_MEMBER_TYPE_VISUALIZATION•
XS_AD_MEMBER_NUMBER_VISUALIZATION•
XS_AD_NODE_NUMBER_VISUALIZATION ConnectedSupported
To hide the model parts and view only the wire frame analysis model:
1. Double-click the model view.
2. In the View Properties dialog box, click the Display... button.
3. On the Settings tab of the Display dialog box, clear the Parts check-boxes.
4. Click Modify.
•
XS_AD_SUPPORT_VISUALIZATION Analysis members will appear in red.Analysis model status
The Results field in the Analysis & Design Models dialog box shows the status of the analysis model. This can be:
•
Up to date•
Not up to date•
Status unknown•
NoneNot up to date means that the model has changed. To find out more:
1. Click Analysis > Analysis & Design models....
2. In the Analysis & Design Models dialog box, select an analysis model.
3. Click Details... to open the Details of analysis model status dialog box. This displays the status of the following:
•
Calculation•
Load combinations•
Analysis model properties•
Parts•
Loads•
Load groupsThe Parts, Loads, and Load groups tabs display information about individual objects based on their ID number.
Running analysis
To run structural analysis on an analysis model:
1. Click Analysis > Analysis & Design Models....
2. In the Analysis & Design Models dialog box, select a model.
3. Click Run.
The analysis application starts and opens the analysis model. Some analysis applications automatically run the analysis.
Viewing analysis results
Once you have run the analysis, you can view the results. For information on analysis results, see the following topics in the online help:
•
Get results•
Analysis > Analysis & Design Models...So that you can perform a visual check, you can have Tekla Structures use different colors to show the utilization ratio of steel parts in the physical model. To do this:
1. Run the analysis.
2. Click Analysis>Analysis & Design Models....
3. In the Analysis & Design Models dialog box, select an analysis model.
4. In the Model Editor, click View > Representation > Object Representation....
5. In the Object Representation dialog box, select the object group whose utilization ratios you want to show.
6. In the Color column, select Color by analysis utility check....
7. In the Utility Ratio Ranges dialog box, set the ranges of ratio for each of the colors that Tekla Structures uses to show safe and unsafe parts.
8. Click OK. Tekla Structures shows the utilization ratio of the steel parts in the selected analysis model using the following colors: