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6/03/2011

Design Cellphone Structure with ProE Part C

Figure 123

49. Select the sketch as shown in figure 123 then click icon and select extrude as solid then enter a depth of the extrude.the extrude1 as shown in Figure 124 and figure 125.

Figure 124

Figure 125

69. Clickicon, select the sketch plane dtm7 this process as shown in figure 126 then select OK to create a sketch as shown in Figure 127 ,then click the .

Figure 126

Figure 127

70. Select the sketch as shown in figure 127 then click icon and select extrude as solid then enter a depth of the extrude.the extrude1 as shown in Figure 128 and figure 129.

Figure 128

Figure 129

71. Clickicon, select the sketch plane dtm7 this process as shown in figure 130 then select OK to create a sketch as shown in Figure 131 ,then click the .

Figure 130

Figure 131

72. Select the sketch as shown in figure 131 then click icon and select extrude as solid then enter a depth of the extrude.the extrude1 as shown in Figure 132 and figure 133.

Figure 132

Figure 133

73. Clickicon, select the sketch plane dtm7 this process as shown in figure 134 then select OK to create a sketch as shown in Figure 135 ,then click the .

Figure 134

Figure 135

74. Select the sketch as shown in figure 135 then click icon and select extrude as solid then enter a depth of the extrude.the extrude1 as shown in Figure 136 and figure 137.

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Process Layout for Outer Panels with AutoForm

Particularly high quality demands are associated with outer panels. One has to do meet these requirements during the development of the tool geometry and the layout of the forming process, This lesson describes the basic procedures for the simulation of outer panels in detail. A complete discussion of all the important aspects of quality regarding outer panels cannot be covered, however, in the contexf of this workshops.

Main Focus

Symmetry, half input

Generating wiper tool and wiper direction

Drawing stage with inner binder

Outer binder with butterfly

Determining initial blank outline using AutoForm-Blank generator

Determining drawbead force using Drawbead generator

Checking binder closing and first punch contact

Evaluation of the surface quality

Used Software

AutoForm-DieDesigner

AutoForm-Blank generator

AutoForm-Incremental

Setting up a New Simulation and Importing the Part

For this lesson, the part geometry (left-hand half of a symmetrical single action part) is available in af format. The right-hand part is designed automatically in AutoForm as a reversed image to the left-hand half.

few ... > New file > File name: pp_lesson_J)5 > Import File > File format: a f > Directories: Select the folder containing the file > Files: pp_Iesson_05.af > OK

Part Geometry Stage Defining the Symmetry Plane

Determine the symmetry plane on which the left-hand half of the part is mirrored. The two parts are tipped into the drawing position (Tip page) a little later.

Pre > Symmetry / double attached > Symmetry, half input

For symmetrical single-action parts select type of geometry Symmetry, half input. Normally, the xz plane with y = 0 is the symmetry plane in the vehicle coordinate system.

Symmetry plane: Automatic

The part geometry is now completely available and does not need to be modified either. For this reason the individual geometry stages are now being set up.

The part is produced in three operations. The drawing stage OP20 is followed by the cutting operation OP30 and then the hemming flange is restruck in OP40,

Add Wio?r Staoe 40

Insert a new geometry stage for the wiper operation as geometry stage 40.

Add ... > Add stage > Tag: 40 >Type: Form > OK

Geometry Stage 40: Wiper Tools Go to the Wiper page.

Form 40 Wiper > Add wiper

The definition of the wiper requires the specification of at least the geometry which is transformed in operation 40. This is the flange itself, as well as the radius between the flange and the part.

Enter the necessary surface into the appropriate register:

Form 40 Wiper > Select the flange surface > Wiper region: Wall

In order to facilitate die selection of the radius faces, click on Display wall.

Put the necessary radius faces in the appropriate register:

Form 40 Wiper > Select the radius faces with the right-hand mouse button

> Wiper region: Radius

Thus the geometry definition is complete and the specifications for the wiper geometry can be defined.

The flange being measured is one of 7 mm. For this reason a height of 25 mm is sufficient for the wiper geometry.

Wiper geometry > Height: 25.00

Use the button
Form 40 Wiper > Apply

to generate the wiper geometry and the wiper directions.

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Fighter Web Structure in CATIA

Step 1: Setting Parameters

In this step, we open the ASL part and set default sheet metal parameters.

1.1 Open Aerospace Sheet Metal Design workbench

1.2 Open Fighter_Web_Structure_Initial.CAT partwhich is located in the ASL_F\\Student\\Data\\Fighter Web Structure directory

1.3Select View \\Render Style \\Parallel

Define In Work Object PartBody in the tree

1.1 Select AluminumTable.xls file located in ASL_F\\Student\\Data\\Parameter_Tables directory

Set Compensation options as shown on illustration

Select OK

Step 2: Creating the Web

In this step, we create the web of the Sheet Metal part

Select the Web icon

Boundaries: select the yellow contour

Select OK

Step 3: Creating Surfacic Flanges

In this step, we create two surfacic flanges (one curved and one planar)

1.2 Curved Surfacic Flange

Select Flange icon

Base Feature: select the web

Support tab: Select Exact support type

Support Geometry: select yellow surface

Check Material and Base Feature directions arrows are pointing inside the

Web

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Design Fan with UG_NX

1. Launch UG.

2. Click icon, select Model and input name “Fan”.

3. Click icon, then select the ZC as the vector, and edit as shown in Figure 1, then click icon and edit as shown in Figure 2 to define the point, then click icon twice.

Figure 1 Figure 2

4. Click icon, select the center of yellow circle as the point and edit as shown in Figure 3. Then click icon

Figure 3

5. Click icon, select the icon in the Point Method, then click icon, and select the two points to create the curve as shown in Figure 4.

Figure 4

6. Click icon, select the green curve to project, then click icon to shade with edges, and then select the two yellow faces as shown in Figure 5

Figure 5

7. Click icon, then select the yellow parts as shown in Figure 6, then click icon

Figure 6

8. Click icon, then select the yellow curve as the section string 1, and select the red curve as the section string 2 as shown in Figure 7, then click icon

Figure 7

9. Click icon, then select the yellow face to thicken and edit as shown in Figure 8, then click icon

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FIDAP-Thermal Sterilization Part B

Step 5: Specify Material Properties

We are solving the energy and the species equation and so we need to provide the solver with the appropriate material property values required for the analysis. These properties are:

(i) Density (r): The density of the material of the slab is 900 kgm^-3

(ii) Thermal Conductivity (k): The thermal conductivity is 0.55 W (Mk)^-1

(iii) Specific Heat (c_p): The specific heat is 3800 J (kgK)^-1

(iv) Diffusivity (D): The diffusivity of bacteria is 1e-7 m²/s

1) In the Material Properties window, select Cylinder under Zones

2) Click on the text field next to Density and type 900

3) Click on the text field next to Th. Conductivity and type 0.55

4) Click on the text field next to Specific Heat and type 3800

5) Click on the text field next to Species 1 Diffusivity and type 1E-7

6) Click on Apply

7) Click on Boundary Conditions. We will now specify the boundary conditions required to solve the problem.

Step 6: Specify Boundary Conditions and Initial Condition

The boundary conditions for the heat transfer problem are:

On the bottom boundary (Axis): Heat Flux =0 due to symmetry

On the top boundary (Side): Convection B.C with Heat Transfer Coefficient = 40 W/m²K and T_ref = 121⁰C

On the left boundary (Middle): Heat Flux =0 due to symmetry

On the right boundary (End): Convection B.C with Heat Transfer Coefficient = 40 W/m²K and T_ref = 121⁰C

For the species equation, all the boundaries are considered to be insulated. Therefore, Species Flux =0 on all 4 boundaries.

We now specify these boundary conditions to the solver. We do not need to specify the boundary condition on the axis as these are taken to be zero flux boundaries by default by the solver.