6b. Algor Vector

Structural Simulation using Algor

Vector structure_Kansai Airport

1 Importing model

After modeling in Rhino using vector, send the model with .dxf format.

Please mind the following before import to the Aglor.

–       All vectors in the same layer in Rhino will be transferred as a part in Algor. We should put all the members with the same cross section in the same layer in Rhino.

–       All polyline have to be exploded to individual line.

Click ‘File’ in the menu bar and ‘Open’. Click ‘Options’ and tick the box of ‘Import as construction objects’. Press ‘OK’

Select the .dxf file and press ‘Open’

Change the unit system to ‘Metric (SI)’

Then, change the unit system to ‘Custom’ and change the unit of length to ‘mm’. Press ‘OK’

Press OK for the ‘Static stress with linear material models’

2 Changing vectors to model

All the vectors imported are construction line. This part is to change the vectors to model.

Highlight all the lines under ‘1 <3-D Objects>’. Right-click and select ‘Modify Attributes’

Uncheck the box of ‘Construction object’. Press ‘OK’. Do the same procedure to all the other parts

3 Element Type

Highlight all the parts and right-click to select ‘Modify’, and then ‘Element Type’. Click ‘Beam’

4 Element data

Double-click ‘Element Definition’ in Tree view. Hightlight layer ‘1’ and click ‘Cross Section Libraries

You can choose different type of cross section and input the size. In thise case, we choose ‘Pipe’, 75m as Outer radius and 68mm as Inner Radius. Press ’OK’. Do the same procedure to all the other parts with particular cross section and sizes.

5 Material

Double click ‘Material’ in the Tree views and select the material. Press OK. Do the same procedure to all the other parts with particular material.

6 Boundary Condition

Setting up the boundary condition for a vertor structure woule be the same procedure as that in Shell structure. Highlight the vertices. Right click and select ‘Add’. Click ‘Nodal Boundary Conditions’

Select ‘Fixed’. Press ‘OK’

7 Loading

Setting the gravity load would be the same procedure as that in Shell structure.

Double click ‘Analysis Type’ in the tree view. Make sure that ‘Accel/Gravity’ under ‘Multipliers’ is set to ‘1’

Click ‘Gravity/Acceleration’ and ‘Set for standard gravity to set the gravity load. Press ‘OK’

9 Results

Click the icon of ‘Perform analysis’ to start analyzing the model

Click the icon of ‘Perform Analysis’ in tool bar to start analyzing the model.

Wait until the analysis is completed.

Highlight all the parts in Tree views and select ‘3-D visualization’. You can visualize all the members with the corresponding cross section

Double-click Displacement in Tree views or you can view other results by clicking ‘Results’ in the menu bar.

Select ‘Result Options’ in the menu bar and then ‘Displaces Model Options’. The scale of the deformation can be multiplied by the scale factor.

If we select ‘As a Absolute Value’ and enter ‘1’ in the Scale Factor, the model would show with a actual scale of deformation.

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