# DMU Clash - Detailed Computation

The DMU Clash - Detailed Computation tab contains give categories of options:

## Level of Detail

Select the option specifying at what level of detail the detailed computation is run:

• Element: lets you work globally at product level while allowing you to pinpoint the elements involved.
• Product: gives information at product level only.

Note: Element analysis in Detailed Results and Visualization boxes is only available if the level of detail is set to Element.

By default, the level of detail is set to Element.

Let's describe the various combinations of options and their impact on the result.

### Element

##### Level of detail = Element
• Product A = A1 + A2 + A3
(the product A consists of 3 elements)
• Product B = B1

Computation:

(A1-B) = Clash
(A2-B) = Clash
(A3-B) = Contact

Final Result: (A-B) = Clash

##### Element selected for Mode of Penetration:

Note: The Compute penetration depth or minimum distance option is selected in During initial computation area
(This specific clash computation setting is available in Tools > Options > DMU Space Analysis >DMU Clash tab)

##### Level of detail = Element Mode of penetration = Element

(A1-B) = Clash (Vector of penetration =V1)
(A2-B) = Clash (Vector of penetration = V2)
(A3-B) = Contact

Final Status = Clash
Final Penetration Vector: V1 = Max (V1,V2)

##### Level of detail = Element Mode of penetration = Product

(A1-B) = Clash
(A2-B) = Clash
(A3-B) = Contact

Final Status = Clash
Final Penetration Vector = V

### Product

Let's describe the various combinations of options and their impact on the result.

##### Level of detail = Product

(A-B) = Clash

Final Result: (A-B) = Clash

##### Level of detail = Product Mode of penetration = Element

(A-B) = Clash

Final Status = Clash
Final Penetration Vector: V1 = Max (V1,V2)

##### Level of detail = Product Mode of penetration = Product

(A-B) = Clash (Vector of penetration =V1)

Final Status = Clash
Final Penetration Vector = V

#### Element option selected in Level of detail area

##### Level of detail = Element
• Product A = A1 + A2 + A3
(the product A consists of 3 elements)
• Product B = B1

(A1-B) = Clash
(A2-B) = Clash
(A3-B) = Contact

Final Result: (A-B) = Clash

## Clash Result

Select the option specifying the graphics representation for clashes.

• Curve: Red intersection curves identifying clashing products are computed and displayed.

If you select the Curve option button, note the size of the CATProduct will impacted when saving the interference within the CATProduct document. The more significant, the interference is, the longer the curve is and consequently the bigger the CATProduct is.

• None: No intersection curves are computed.

By default, this option is set to Curve.

## Contact & Clearance Result

Select the option specifying the graphics representation for contacts and clearances.

• Triangle: Yellow and green triangles identifying products in contact and products separated by less than the specified clearance distance respectively are computed and displayed.

Note: The graphics display and storage of the triangular representation is costly and may adversely affect performance.

• Surface: Yellow and green surfaces identifying products in contact and products separated by less than the specified clearance distance respectively are computed and displayed.

If you select this option:

• You must set an accuracy. The value entered defines the maximum value for the length of the longest side of a triangular representation of the results. This representation is used to obtain the yellow and green surfaces.

• Note the size of the CATProduct will be impacted when saving the interference within the CATProduct document.
The more significant the interference is, the longer the curve is and consequently the bigger the CATProduct is.

• None: No triangles or surfaces are computed.

By default, this option is set to Triangle.

## Numeric Result

Select the option specifying whether or not a numeric result will be computed and displayed.

• Penetration depth or minimum distance: The penetration depth of clashes and the minimum distance for clearances is computed and displayed.

• None: No penetration depth or minimum distance is computed.

By default, this option is set to Penetration depth or minimum distance.

## Intersection Volume

Select the option specifying the graphics representation for clashes. This representation can be requested in addition to that selected under Clash Result.

• Voxel: Voxels (cubes) identifying clashing products are computed and displayed.

If you check this option, you must set the voxel size. The value entered is the edge-length of the voxel or cube. A lower value will give a more accurate result but will also require a longer computation time and more memory. The minimum value is 1mm (0.03937 inch).

• Boolean: Boolean solids identifying clashing products are computed and displayed.

Now, the inertia bounding box is also displayed around the intersection volume in the Results window (not in the Preview window).

The box dimensions (width, height and length )are also displayed.

• None: No intersection volume is computed.

Notes:

• The intersection volume is only visible in the Results window.

• The value of the intersection volume is also given in the Detailed Results box of the Check Clash dialog box.

• The intersection volume is not stored in the model and cannot be saved in ENOVIA LCA or ENOVIA VPM.

By default, this option is set to None.