The Relative Displacement tool interactively helps you create the TH/SPRING card, which supports time histories with spring output. This tool appears as a tab named Relative Displacement.
To display the tool, select Relative Displacement from the Utility menu. The tool appears as a tab in the tab area.
1. | To begin creating a time history of springs, type a name in the Time History Name field and click Create/Edit. |
A pop-up menu appears from which you can choose either to create the spring and edit the card that is generated or simply create the spring.
2. | The time history appears in the Output Blocks list. Right-click the list item and select Add Springs to create springs for that time history. |
3. | You are prompted to pick nodes from the model to define springs. |
Note: | The first node you select is used as Node1 in the definition of the spring. |
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1. | To edit a time history, right-click its name in the Output Blocks list and select Edit. The card for that time history opens in the main panel area. |
2. | From here you can provide names for each element, and add or modify variables. To add variables, click NUM_VA to open a pop-up window of numbers. Click the number of variables you want to include in the card. Var fields appear where you can type the variable names. |
When you use the Relative Displacement tool to create time histories of springs, you also create a component named Comp_Rel_Disp. This component is of the Springs/Rivets type and no material is assigned. The component contains one property, SPR_GENE, with only the mass value specified.
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