Radial Replication
Rotated Support
Click the File menu > New Model command to access the New Model form.
Click the drop-down list to set the units to .
Click on the Beam button to access the Beam form.
Type 2 in the Number of Spans edit box.
Type 10 in the Span Length edit box.
Click the + (plus) symbol beside the Beams drop-down list to access the Frame Properties form. In that form:
Click the Import New Property button to access the Import Frame Section Property form. In that form:
Select Steel from the Frame Section Property type drop-down list.
Click the I/Wide Flange button to access the Section Property File form; select the SECTIONS.PRO file and click the Open button to access a database form showing the sections available from the selected database.
Scroll down the list of section and highlight W24X68 to select it.
Click the OK button on the database form to access the I/Wide Flange Section form.
Click the + (plus) symbol beside the Materials drop-down list to access the Define Materials form. In that form:
Highlight the A992Fy50 definition in the Materials display list.
Click the Modify/Show Material button to access the Material Property Data form. In that form:
Verify that the Units drop-down list is set to .
Verify that 29000 is entered in the Modulus of Elasticity edit box.
Verify .3 is entered in the Poisson’s Ratio edit box.
Accept the other default values.
Click the OK buttons on the Material Property Data and Define Materials to return to the I/Wide Flange Section form.
Verify that A992Fy50 is displayed in the Materials drop-down list.
Click the OK buttons on the I/Wide Flange Section and Frame Properties forms to close those forms and return to the Beams form.
Uncheck the Restraints checkbox.
Click the OK button to close the Beams form and display the template model in the program windows.
Click the “X” in the top right-hand corner of the 3-D View window to close it.
Click the Set Display Options button (or the View menu > Set Display Options command) to access the Display Options for Active Window form. In that form:
Check the Labels box in the Frames/Cables/Tendons area.
Click the OK button.
Select line object 2 by clicking on it.
Click the Edit menu > Replicate command to access the Replicate form. In that form:
Click the Radial Tab.
Choose the Parallel to Y option in the Rotate About Line area.
Verify that 0 is entered in both the X and Z edit boxes in the Intersection of Line with XZ Plane area. Note it will rotate about the Y-axis at the origin.
Type 1 in the Number edit box in the Increment Data area.
Type 45 in the Angle edit box in the Increment Data area.
Click the OK button.
Select line object 2 by clicking on it.
Click the Edit menu > Replicate command to access the Replicate form. In that form:
Click the Radial tab.
Type 90 in the Angle edit box in the Increment Data area.
Click the OK button.
Select line object 2 by clicking on it.
Click the Edit menu > Replicate command to access the Replicate form. In that form:
Click the Radial tab.
Type 270 in the Angle edit box in the Increment Data area.
Click the OK button.
Select line object 2 by clicking on it.
Click the Edit menu > Replicate command to access the Replicate form. In that form:
Click the Radial tab.
Type 330 in the Angle edit box in the Increment Data area.
Click the OK button.
Select line object 2 by clicking on it.
Press the Delete key on the keyboard to delete this member.
Click the Restore Full View button to re-size the drawing.
Click the Set Display Options button (or the View menu > Set Display Options command) to access the Display Options for Active Window form. In that form:
Check the Labels box in the Joints area.
Uncheck the Labels box in the Frames/Cables/Tendons area.
Click the OK button.
Select joint 4.
Click the Assign menu > Joint > Local Axes command to access the Joint Local Axis form. In that form:
Type -45 in the Rotation about Y' edit box.
Press the OK button.
Select joint 7.
Click the Assign menu > Joint > Local Axes command to access the Joint Local Axis form. In that form:
Type -120 in the Rotation about Y' edit box.
Press the OK button.
Select joint 1.
Click the Assign menu > Joint > Restraints command to access the Joint Restraints form. In that form:
Check all six boxes in the Restraints in Local Directions area.
Click the OK button.
Select joints 4 and 5.
Click the Assign menu > Joint > Restraints command to access the Joint Restraints form. In that form:
In the Restraints in Local Directions area uncheck the three Rotation boxes and leave the three Translation boxes checked.
Click the OK button.
Select joint 7.
Click the Assign menu > Joint > Restraints command to access the Joint Restraints form. In that form:
In the Restraints in Local Directions area, uncheck the Translation 1 box and leave the Translation 2 and Translation 3 boxes checked.
Click the OK button.
Select joint 6.
Click the Assign menu > Joint Loads > Forces command to access the Joint Forces form. In that form:
Type 100 in the Force Global X edit box in the Loads area.
Click the OK button.
Click the Show Undeformed Shape button to remove the displayed joint force assignments.
Click the Set Display Options button (or the View menu > Set Display Options command) to access the Display Options for Active Window form. In that form:
Uncheck the Labels box in the Joints area.
Click the OK button.
Click the Analyze menu > Set Analysis Options command to access the Analysis Options form.
In that form click the Plane Frame XZ Plane button to set the available degrees of freedom.
Click the OK button.
Click the Run Analysis button to access the Set Load Cases to Run form. In that form:
Highlight (select) MODAL in the Case Name list and click the Run/Do Not Run Case button.
Verify that the DEAD analysis case is set to Run in the Action list.
Click the Run Now button to run the analysis.
When the analysis is complete, check the messages in the SAP Analysis Monitor window (there should be no warnings or errors) and then click the OK button to close the window.
Right click on the joints labeled A and B in the problem statement to view their displacements.
Click the Display menu > Show Forces/Stresses > Joints command to access the Joint Reaction Forces form. Click the OK button.
The reactions are displayed on the screen. If the text is too small to read, use the Zoom feature to zoom in, or change the minimum font size as described in the note below.
Note: To change the minimum font size, click the Options menu > Preferences > Dimensions/Tolerances command. In the Minimum Graphic Font Size edit box, input a new size, for example 5 or 6 points. Click the OK button.