CATIADMU官方教程一.docx

1、CATIADMU官方教程一DMU OptimizerDetailed StepsTable of ContentsNH90 ExerciseStep 11. Compute Simplification Go to the DMU Optimizer workbench Open the CATProduct : CATDMO_NH90_Step1.CATProduct Click on the Simplification icon The Simplification dialog box appears: Select the NH90_linkage_rod_type-02 Type

2、an Accuracy of 3mm Click on the Preview button:The preview window appears:2. Save the Result as a CGR file Click on the Save button Select a directory and type a different name if you want Click on the Save button of the Save As windowThe Simplification dialog box stays active3. Compute a multi-comp

3、onents Simplification Select others components like in the picture below(one by one or with a trap) Type an Accuracy of 5mm Click on the Preview buttonThe result is displayed: Save it as a CGR file like previously Click on the Close button4. Replace the Simplified components by the CGR file just cre

4、ated Remove these five components from the assembly Insert the CGR file of the Simplification in the product5. Save the product under another name Go to the menu File / Save As Type a new name Click on SaveStep 26. Compute Silhouette Open the CATProduct : CATDMO_NH90_Step2-4.CATProduct Select the Si

5、lhouette View in the Named Views panel This viewpoint is the one, which will be used for the silhouette view7. Compute and save the silhouette Select the Silhouette icon Select the helicopter for the Selection field Enter 50mm for the Accuracy parameter Select the viewpoint Silhouette View from the

6、Multi-selection List panel then Click OK Launch the computation by clicking on the Preview button It takes about one minute and half to compute the silhouette with this accuracy The preview window display the result Click on the Save button You are asked to save the silhouette in a directory: Save i

7、t Note that the resulting file is a tessellated file format (. cgr) Click on the Close button8. Create a scene with the silhouette duplicated several times Close all the windows in CATIA Go to the DMU Navigator workbench Insert as an existing component the silhouette you have just created You can in

8、spect the silhouette as you wish Within the Product, copy and paste the helicopter several times, And use the 3D Compass to move the copies You can create a scene with 4 or 5 helicopters parked together9. Information about the reduction of sizeO Size of the original model: 15.7 MBO Size of the tesse

9、llated file: 7.8 MBO Number of triangles: 463.000O Size of the silhouette: 3.4 MBO Number of triangles: 229.000Step 310. Compute Wrapping Go to the DMU Optimizer workbench Open the CATProduct : CATDMO_NH90_Step3.CATProduct Select the view View for Wrapping in the Named Views panel This viewpoint is

10、the one which will be used for the Wrapping computation11. Compute the Wrapping representation and substitute it to the original Select Tools - Options Select DMU Optimizer in the left-hand box Select the DMU Optimizer tab Switch the Manage as alternate shape option on for Wrapping Check that Activa

11、te shape option is on Check that Default shape option is off Click OK Select the Wrapping icon Select the landing gear for the Selection field Put the Grain value to 50 mm Put the Ratio to 0.0 Click Preview Note that the wrapping representation is replacing the original model in the session, because

12、 the Activate Shape option is on in the DMU Optimizer tab Make some tests by changing the parameters Grain, Ratio or Cubic, with Preview button to compute the new representation Click Save when you are satisfied with the wrapping representation You are asked to save the wrapping representation (cgr

13、file) Re-compute on another component or click CloseStep 412. Compute Thickness Go to the DMU Optimizer workbench Open the CATProduct : CATDMO_NH90_Step2-4.CATProduct13. Prepare the options for the result Turn the option Manage as an alternate shape on for Thickness14. Compute and visualize the thic

14、kness Select the Thickness icon Select the NH90 skin for the Selection field Enter 5 mm for the Offset1 field Enter 0 mm for the Offset2 field Click Preview to start the computation You can manipulate the new representation as you wish15. Analyse the new representation (volume) Select the Measure it

15、em icon Click on the NH90 skin with its new thickness You get the volume of the NH90 skin with a thickness of 5 mm (for example with composites structures) Close the Measure item panel You can try several thicknesses and re-start the computation, then compare the volumes To go further in this functi

16、onnality, you can put some orientation constraints to the faces with a wrong orientation, and re-start the computationStep 516. Compute Offset Go to the DMU Optimizer workbench Open the CATProduct : CATDMO_NH90_Step5.CATProduct Turn the option Manage as an alternate shape on for Offset Display the v

17、iew View Offset17. Compute and visualize the offseted representation Select the Offset icon Select the Actuator Cylinder component for the Selection field Enter 20 mm for the Offset field Click Preview to start the computation You can manipulate the new representation as you wish You can try differe

18、nt values for the offset, then save the one you want to keep Click CloseStep 618. Swept Volume Click on the swept volume icon Choose the SweptVolume replay Click on the search icon of Products to sweep and keep selected only the Landing Gear Wheel Click OK Click on Apply button to preview the result

19、 in the preview window Click Ok to store the result as a Cgr, Vrml or V4 model file19. Close the structure Select File Close Select No save in the Close panelStep 720. Compute Free Space Go to the DMU Optimizer workbench Open the CATProduct : CATDMO_NH90_Step6.catproduct Turn the option Manage as an

20、 alternate shape on for Free Space21. Compute and visualize the free space representation Select the Free Space icon Select the wheel model for the Selection field Click Dialog Active to display the Free space box panel Click on the Trim on selection button to re-center the box on the wheel Put the

21、Accuracy to 10 mm Put the Type to: In box area Click Preview to start the computation You can manipulate the new representation as you wish You can try different values for the accuracy, then save the one you want to keep Note that the representation saved is a 3Dmap format, that is to say a volume representation, made of voxels