6/30/2011

Blower with UG_NX

 

Figure1(Final model)

Step1:Establish a new model,named blower.prt

Step2:Create sketch 1 as shown in figure 1

(1)Click ,,Popping the dialog box of "create sketch"

(2)Choose XC-YC as sketch plane,click

(3)Create sketch as figure 2

(4)Click

figure 1 figure 2

Step3:Create mirror curve as shown in figure 3

(1) Click ,curve from curves, mirror curve,Popping the dialog box of "mirror curve" showed in figure 4

(2) Choose the curve in figure 1 as mirror curve ,choose ZC-XC as mirror plane.

(3) Click

figure 3 figure 4

Step4:Create sketch 2 as shown in figure 5

(1)Click ,,Popping the dialog box of "create sketch"

(2)Choose ZC-XC as sketch plane,click

(3)Create sketch as figure 6

figure 5 figure 6

(4)Click

Step5:Create datum plane 1 as shown in figure 7

(1)Click ,Popping the dialog box of "datum plane" showed in figure 8

figure 7 figure 8

(2)In the field "type",choose "at distance" ,choose YC-ZC as reference plane,at the blank of distance input 160.

(3)Click

Step6:Create sketch 3 as shown in figure 9

(1)Click ,,Popping the dialog box of "create sketch"

(2)Choose datum plane 1 as sketch plane,click

figure 9 figure 10

(3)Create sketch as figure 10(first,click ,curve from curves,intersection curve,respectively choose the two curves.

(4)Click

Step7:Create datum plane 2 as shown in figure 11

figure 11

(1) Click ,Popping the dialog box of "datum plane"

(2) In the field "type",choose "point and direction" ,choose the curve endpoint as specify point ,choose XC as specify vector .As showed in figure 12

figure 12

(3) Click

Step8:Create sketch 4 as shown in figure 13(Like step 6 and choose datum plane 2 as sketch plane,create sketch like figure 14)

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ANSYS AUTODYN Euler-Lagrange Interactions

Automatic Coupling

?Entire Surface of Lagrange Part automatically interacts with Euler

?Euler exerts pressure on Lagrange

–Euler pressures are integrated over Lagrange surface areas to obtain nodal forces

?Lagrange acts as a flow constraint for Euler

–No friction between Lagrange and Euler Parts

?Partially covered Euler cells are automatically Blended

?Automatic coupling can be used with Erosion

Euler Flow Constraints

?Lagrange Parts impose flow constraints on Euler Parts by covering volumes and faces in the Euler grid

–Lagrange thickness must be larger than Euler cell size for flow constraints to functionproperly

–Lagrange element size should be larger than Euler cell size for smoothest coupling

?2:1 ratio recommended

Polygon Coupling

?Only available for 2D Euler

?Polygon acts as a flow constraint for Euler

–No friction between Polygons and Euler Parts

?Polygon points can be fixed (anchored) or attached to Lagrange surface nodes

?Polygon coupling must be used for Euler–Shell interactions in 2D

–Automatic coupling is usually preferable (and easier) if no Euler–Shell interactions are

required

?Polygon coupling cannot be used with Erosion

Polygon Examples

Menu for 2D Models

?Coupling Types

–None

–Automatic (polygon free)

?Easy to use

?Can be used with erosion

?Must be used for all Parts

?Cannot be used with Shell Parts (no thickened Shells)

–Polygons

?Cannot be used with erosion

?Can be used for Lagrange, ALE and Shell Parts

?No Euler subcycling

Example: Blast Wave on Deforming Wall (2D)

Example: Explosive Demolition of Concrete (2D)

?Multi-material Euler Part : HE + Air

?Lagrange Part : Concrete

Contact, Erosion and Coupling

?Contact, Erosion and Coupling can be used simultaneously in an analysis (must use automatic coupling)

–Failure and fragmentation of components

–Venting of fluids / gases through failed / fragmented components

–Combined shock (blast) and impact (fragment) loading of structures

?Major advantage over other programs

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Design Cellphone Cover with ProE Part-A

 

1.Launch PRO-E

2.Click icon, select part and input name “FRONT_COVER”.

3.Clickicon, select the sketch plane FRONT then select OK to create a sketch as shown in Figure 1 and figure 2 ,then click the

Figure 1

Figure 2

4.Select the sketch as shown in figure 2 then click icon and select extrude as solid then enter a depth of the extrude.the extrude1 as shown in Figure 3 and figure 4.

Figure 3

Figure 4

5.Clickicon, select the sketch plane surf F37 then select OK to create a sketch as shown in Figure 5 and figure 6 ,then click the

Figure 5

Figure 6

6.Select the sketch as shown in figure 6 then click icon and select extrude as solid then enter a depth of the extrude.the extrude1 as shown in Figure 7 and figure 8.

Figure 7

Figure 8

7.Click the icon to merge the quilt figure 4 and figure 8 ,this process as shown in figure 9 and figure 10 and figure 11

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