IGRIP–Software Settings

Scope:

This procedure describes how to launch an IGRIP session and become familiar with the IGRIP workbench toolbars.

Procedure:

The Training Manuals are divided into modules and steps. Depending on the class, each module represents the configuration and each step in the module guides you through a procedure. A project will be created from start to finish.

Settings

This reviews the setting required for our project.

1. Launch the software. To do this, click the icon on the desktop, or select Start / Programs / DELMIA, DELMIA V5.

2. In the menu bar, select Tools / Options.

3. span style='mso-ignore:vglayout;;z-index:23;left:0px;margin-left:127px;margin-top:110px;width:230px; height:39px'Select General / General tab. In the save field, deactivate Automatic Save.

4. In the Document tab click on Other folders (make sure it says Yes under the Active column). Click the Configure button.

When creating a process, users may choose to obtain part geometry from another file. The original storage location of these files probably differs from the current location of files. When V5 attempts to read these files, it cannot find them because pointers inside of the data still point to the original location. Configure this location to link to the directories where the project is saved.

5. In the Other Folders window, search for the project and add the directory with the Add Tree button. Click on OK to complete this setting.

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The project is then added to the linked document list. For this project, your teacher will detail the path.

6. In the Environment Tools toolbar, the Toggle Manipulation Handle Mode command can be toggled On/Off. When toggled on, a green box appears around the selected object. This box makes the object easier to grab and move.

7. Under the General / Display / Navigation tab, deactivate the Preselect in geometry view option.

Objects can now be chosen from the PPR tree only. If this option is active, objects in the 3D view are automatically selected by passing the mouse over them. Selections, in this made may be made that are not wanted.

8. Deactivate the Display manipulation bounding box option.

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9. In the Navigation field, activate the Gravitational effects during navigation option. Select Z.

This option is especially useful for a project with a floor; you can rotate around and the floor stays level with the viewpoint.

10. In the General / Display / Performances tab note the settings for the 3D Accuracy, the 2D Accuracy, and the Level of detail fields. The values are at the lowest setting (as shown below) to give a more exact view of the geometry with this setting. A circle is displayed as round not as an octagon.

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11. The General / Display / Visualization tab displays the color settings for the software. For this project, change the background to white. Click on the down arrow or click on the pull down menu to see the available colors.

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The default color for a clash (collision) is orange. If the robots are orange, the clash is difficult to see. Change the clash color in the Selected elements field

 

12. In the General / Parameters and Measure / Units tab, change the length of the units to mm

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FIDAP-Drug Delivery

Here is an example to demonstrate how to setup up a problem in FIDAP and to solve it. The example deals with the analysis of a birth control patch. The contraceptive patch is a very effective method for birth control. The patch can be placed on multiple parts of the skin and the drugs are then transferred through the tissue by diffusion to the blood stream. The blood stream in turn transports these drugs to various parts of the body. Norelgestromin and ethinyl estradiol are the two drugs used in the patch. In this example, we model the movement of Norelgestromin through the tissue. The patch is considered to be circular with a radius of 2.4 cm. We model 0.6 cm of the skin around it to see how the drug spreads out from the edge of the patch. The thickness of the tissue is assumed to be 1.2 cm and the drugs diffuse into the blood stream after that. The schematic is shown in Fig. 1. It is assumed that the entire drug is taken away by the blood stream. The diffusivity of Norelgestromin is 1.11 x 10^-11 m²/s and the patch provides a constant flux of 8.849 x 10^-7 g/m²s.

(a) (b)

Figure 1. (a) Three dimensional view of the skin-patch system, (b) Axisymmetric geometry

The geometry is modeled as shown in Fig. 1(b) in FIDAP. The transport of the drug is symmetric about the axis and so we can use the axisymmetric geometry to simplify the problem. The problem is non-dimensionalized since we are dealing with a very low value of diffusivity. The non-dimensional values of the parameters are given below:

1. Diffusivity: 1

2. Thickness of the tissue: 1

3. Radius of the patch: 20

4. Length of the skin surrounding the patch: 5

5. Flux = 95.665

6. 1 week is equivalent to 4.662 time units in the non-dimensional form.

We now go ahead and solve the problem in FIDAP.

Step 1: Run the software GAMBIT to create the geometry and to mesh it

In the Command Prompt, type: gambit –id drugd

drugd is the filename

Remember: The filename should be at the most 7 characters long.

Now Gambit is launched. Click on Solver menu at the top of the Gambit window and choose FIDAP.

Step 2: Create Geometry and Mesh in GAMBIT

The geometry in this case is a cylinder. However, since this is an axi-symmetric problem we will solve it with the help of a 2D geometry. We will first create the vertices and then connect these vertices in pairs to form edges and then create the faces by selecting the appropriate edges.

Create the vertices

This step specifies the coordinates of the vertices to be created. The coordinates of the vertices of the rectangle for our problem are (0, 0, 0), (1,0,0), (0,20,0), (0, 25, 0) and (1, 25,0)

1) Under the Operations panel, click on the Geometry command button

2) Under the Geometry panel, click on the Vertex command button

3) Under the Vertex panel, click on Create Vertex. Create Real Vertex Window pops up.

4) In the Create Real Vertex Window under Global, type in the coordinates of the vertex (0, 0, 0) in the text boxes

5) Click on Apply

6) Repeat for the other vertices: (1, 0, 0), (0, 20, 0), (0, 25, 0) and (1, 25, 0)

1) Click on Fit to Window to see the zoomed view

Create the edges

We now create the edges by selecting pairs of vertices.

1) Under the Geometry panel, click on the Edge command button

2) Under the Edge panel, right click and hold on the Create Edge drop-down menu and choose Straight

3) In the Graphics window, Shift-left-click on the vertices A, B, C, D, E (See Figure) (in the given order) to select these vertices. You will see that the vertices turn red on selection.

4) In the Create Straight Edge window, click on Apply

5) In the Graphics window, Shift-left-click on the vertices A and E

6) In the Create Straight Edge window, click on Apply

The edges should look like this:

 

Create the face

Now we will create the face by connecting the required edges.

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Fairing Linking in CATIA

 

Step 1: Setting Parameters

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

Open Fairing_Linking.CATPart which is located in the ASL_F\\Student\\Data\\Fairing Linking Directory

Make ASL workbench active

Select View \\Render Style \\Parallel

Define In Work Object PartBody of Fairing Linking part in the tree

Select Aerospace Sheet Metal Design Parameters icon

Select Sheet Standard Files command

Select AluminumTable.xls File located in ASL_F\\Student\\Data\\

Parameter_Tables

Select Design Table icon regarding Default Bend Radius parameter

Select 2^nd row (2mm)

Select OK

Compensation tab: Set options as shown on illustration

Step 2: Creating the Web

In this step, we create the rib web

Select Web icon

Select Fuselage Complet (Support geometry)

Select Split.4 as reference wire and Intersect.5 as point

Select the 4 boundary elements

1 is the Split.4

2 is the Split.8

3 is the Split.6

4 is the Split.9

Select OK

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Rib in CATIA

 

Step 1: Setting Parameters

In this step, we open the ASL product and set default

sheet metal parameters.

Open Rib.CATProduct which is located in the ASL_F\\Student\\Data\\Rib Directory

Make Rib.CATPart active and ASL workbench active

Select View \\Render Style \\Parallel

Define In Work Object PartBody of Rib part in the tree

Select Aerospace Sheet Metal Design Parameters icon

Select Sheet Standard Files command

Select AluminumTable.xls File located in ASL_F\\Student\\Data\\Parameter_Tables

Select Design Table icon regarding Default Bend Radius parameter

Select 2ndrow (2mm)

Select OK

Compensation tab: Set options as shown on illustration

Step 2: Creating the Web

In this step, we create the rib web

Select Web icon

Select blue plane (Support geometry)

Select 6 boundary elements

1 is the yellow surface

2 is the blue curve

3 is the red plane

4 is the purple curve

5 is the green plane

6 is the green curve

Select OK

Step 3: Creating Flanges

In this step, we create three surfacic flanges

1.1 -1^st flange definition

Select Surfacic Flange icon

Base feature: select the Web

Select Support Tab

Set”exact”support type

Support Geometry: select green plane

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FIDAP-Plotting Temperature_Species History

We have seen how to plot temperature/ species as functions of time (History Plots) for a particular node in the Tutorials and the example covered in class thus far. However, sometime you may need to plot the temperature/ species history for more than one node in the same window to compare the results for different nodes. The following steps outline the procedure for doing it. (Do the following steps after running your simulation in PreSTO)

1) Accept the file: FIPOST >> Accept. A new set of menu list comes up (see Figure).

2) Click on Plot. We are plotting the species history for different nodes for the problem done in class on Drug Delivery. The Plot window opens up.

3) In the Plot window, click on HISTORY. HISTORY Command window opens up.

4) Select Species from the drop down list below DEGREE OF FREEDOM. Left click on the slider and move it to 1 while holding the mouse.

5) Click on Accept. A new tab comes up on the top right hand side of the screen which says DATA NEEDED.

6) Click on the text input field next to INPUT on the lower left side of the screen and type 10 200 50 and press Enter. The three numbers that are input represent ND1, ND2 and NGEN. ND1 is the first node number, ND2 is the last node and NGEN is the increment. In this case, the species history will be plotted for the nodes 10, 60 (=10+50), 110 (=10+2*50) and 160 ((=10+3*50).

7) Click on the text field again and type 0 and the press enter. 0 is entered to terminate the input command for the history plot.

You should see the species history plots for the nodes 10, 60, 110 and 160 in the Graphics window as shown below (These plots are for the problem covered in class on drug delivery)