Push Results to PTC Creo Parametric
When you click out of the Solve Block, PTC Mathcad calculates the following values:
Optimal height of the piston head spherical cap
Optimal height of the engine block spherical cap
Compression ratio of engine based on optimal height values
Engine displacement based on optimal height values
Optimal volume to surface area relationship
Now the optimized values and the radius and height of the spherical cap piston head profile, can be pushed to Creo Parametric to drive the piston geometry.
1. Click Input/Output > Show As List. The Input/Output Designation dialog box opens.
2. On page 5 of the worksheet, select the rph = 35.500mm evaluation regions.
3. Click Input/Output > Assign Outputs.
4. In the Input/Output Designation dialog box, in the Outputs column, change the output of the Alias from out to rph.
5. Select the hph = 1.000mm evaluation region.
6. Click Input/Output > Assign Outputs.
7. In the Input/Output Designation dialog box, change the output of the Alias from Out to hph.
8. Click Show in Worksheet to show the output tags in the worksheet. The embedded worksheet should appear as follows:
9. In the Quick Access Toolbar, click Save and Push.
10. Select OK in the confirmation dialog box that opens when save and push is completed successfully.
11. In the Creo Parametric, Model Tree area, expand the first PISTON_ASSEMBLY.ASM, and then expand PISTON.PRT.
12. Click Tools > Relations.
13. In the Relations dialog box, Look In area, select Feature in the first box.
14. In the Model Tree area, click Sketch 4. The Creo parameter that represents the radius of the piston head spherical cap is D285:2 and the Creo parameter that represents the height of the piston head spherical cap is D286:2.
15. In the Relations dialog box, Look In area, select Assembly in the first box and then select the CRANKSHAFT_ASSEMBLY in the second box.
16. Type the following existing relations in the Relations table:
D285:2=RPH:MATHCAD
D286:2=HPH:MATHCAD
17. Click to verify the new relations and click OK.
18. Click OK to exit the Relations dialog box.
19. Click Model > Regenerate. All the piston heads regenerate to reflect the optimal dimensions:
This completes the tutorial.