138838194-92358648-FEMAP-Sindag.pdf

Building Your First Models in FEMAP

Network Analysis, Inc. 4151 W. Lindbergh Way, Chandler, Arizona 85226

Phone 480-756-0512 Fax 480-820-1991 [email protected] www.sinda.com

Building first models in SINDA/G for FEMAP Third Edition – January 2004

Copyright © 2001 by Network Analysis Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the author and publisher.

PROBLEM #1 HEATING AND CONVECTION ON A RECTANGULAR SURFACE

Outline

This problem will introduce you to basic FEMAP commands by building a simple rectangular surface. (It is assumed that you have basic knowledge of the SINDA/G input file structure, if not, do the Introduction to the SINDA/G Thermal Analyzer tutorial first). You will see how FEMAP assigns geometry and the resulting conductance and heat capacity values to nodes. You will impose a constant heat load to the surface while cooling the surface with uniform convection. Then you will analyze the model by running FEMAP and view the steady state nodal temperatures in an output file. Don’t worry about units for this problem; we will discuss units in later problems. Steps

1) Create a Surface 2) Create a Material 3) Create a Property 4) Mesh the Surface 5) Apply Heat Loads 6) Save the Model 7) Run FEMAP 8) Examine Results

Open FEMAP Click the following buttons:

Start, Programs, SINDAG Demo, SINDA ATM, SINDA ATM (FEMAP) Step (1) Create a 1x2 Rectangular Surface

Convection to 25 deg H=2.2

Total heat load = 40

Plate size 2 long 1 wide K = 320, Density = 1, Cp = 240

A) Geometry B) Surface C) Corners

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Ctrl A will auto-size the geometry in the window. Step (2) Create a Material Click the following buttons:

The Define Material box appears

Enter (0,0,0) for the 1st coordinate in the pop-up box and press OK, then enter (2,0,0) for the 2nd point OK, (2,1,0) for the 3rd, OK, and finally (0,1,0) for the 4th, OK. Press ESC or Cancel to terminate this command

A) Model B) Material

A) Fill in the Title field with “Problem 1

Material”. B) Fill in Thermal Conductivity box with

“320”. C) Fill in the Density box with “1”. D) Fill in the Specific Heat box with “240”. Note the material record is assigned an ID number. Click OK. A box to define a second material pops up which we don’t need, so click Cancel.

SINDA/G Advanced Modeler 5

Step (3) Create a Property Click the following buttons:

The Define Property box appears

A) Model B) Property

A) Fill the Title field with “Prop 1”.

B) Select the material record

you just created by clicking the arrow in the Material box. The property record has ID = 1.

C) Enter “1” in the

Thicknesses box located in the Property Values section.

Click OK. Again you are prompted to create another property. We won’t need this, so click Cancel.

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Step (4) Mesh Surface Click the following buttons:

The Default Mesh Size box appears

A) Mesh B) Mesh Control C) Default Size

Note the default size is set at 1 length unit. You can set the size of the mesh in this box. “1” is OK for this problem. Click OK.


Next, click:

The Entity Selection box appears

The Automesh Surfaces box pops up

A) Mesh B) Geometry C) Surface

Select the surface with the cursor or Select All. Click OK.

Assign your property record by clicking on the Property box arrow. Click OK.

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Right click anywhere in the window and choose Workplane. The Workplane Management box appears.

Ctrl G, will remove the ruler lines by regenerating the drawing. See below.

Step (5) Apply Heat Loads We will now heat the surface uniformly and apply convective cooling.

Click the following buttons:

Uncheck the Draw Workplane box. Click Done.

A) Model B) Load C) On Surface

You have now meshed your original 1x2 surface into two elements, each 1x1 in size. The elements have nodes at each corner with the center nodes shared by the two elements for a total of 6 nodes.


The Create or Activate Load Set box opens


The Create Loads on Surfaces box appears

The Entity Selection – box appears again

Fill in the Title box with “Heat Load and Convection”. Click OK.

Click Select All on the pop-up box to select the surface. Click OK.

A) Select Nodal Heat Flux. B) Enter 40 for the Flux value. Click OK. We should note here that FEMAP does not use correct thermal terminology. This option will apply 40 power units total to the surface.

Click Select All on the Surfaces box. Click OK.

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The Create Loads on Surfaces box appears again

Let’s change the view: Press F8.

Your window should look similar to the figure below.

Drag the cursor over the figure and note the node numbering. Click on the box again and repeat for the other options.

A) Select Convection.

B) Fill in “2.2” for the Coefficient. C) Fill in “25” for the Temperature. Click OK. We don’t have any more loads to apply so hit Cancel on the pop-up box.

Select Dimetric. Click OK. This makes the loading a little easier to see.

Click the button in the lower right hand corner that says ‘off’. Select Node. . .in the pop-up box.


Step (6) Save the Model Click the following buttons:

Step (7) Run SINDA/G

Before we have SINDA/G calculate the results, do a hand calculation of the steady state temperature. You should have a temperature for the surface of 34.091o. To calculate use:

)( 21 TThAq −= , with q = 40, h = 2.2, A = 2, T2 = 25.


A) File

B) Save As…

The File Save As box appears Enter “Prob_1_1x2_Rectangle” Click Save.

A) SINDA/G B) Run SINDA/G

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The FEMAP dashboard will appear

Let’s examine the input file.

Click SINDA/G Input File (.SIN) This will bring up the .SIN file.

Hit the Translate and run SINDA/G buttons. We will run in the default mode, which is the steady state routine SNSOR.

The SINDA/G translator converts the FEMAP neutral file into a SINDA/G input file (.SIN extension)


Before we analyze our model, let’s note how the FEMAP/SINDA/G translator assigns

surface area to the nodes and constructs conductors between the nodes. The elements are divided in ¼’s. Each corner node will be assigned ¼ of the element while the center nodes (2 and 5) will get two ¼’s. This will be reflected in the capacitance values assigned to the nodes and the conductance values for the conductors between the nodes. The translator constructs conductors between the nodes by placing conductors around the perimeter of the elements and two diagonal conductors. Label the diagram below with the node numbers, nodal capacitance values, conductor values and powers by examining the data blocks as described below. Node numbers were noted in Step (5). Consider how the geometry affects these values. In the NODE DATA block, besides the 6 nodes we had in FEMAP, SINDA/G has created a convection node, node 7. It is a boundary node (denoted by the minus sign) with a temperature of 25. Note in the capacitance field that the capacitance values are proportional to the areas (really volumes) assigned to the nodes. Notice in the CONDUCTOR DATA block that conductors have been constructed between the surface nodes and the convection node with conductance values proportional to areas assigned to the nodes. What is the conductance in the Y direction across an element? Do the conductors on one element add up to the elemental conductance? In the SOURCE DATA block, the power assigned to each node is proportional to the areas assigned to the node with the total power equal to 40. This is true with the Nodal Heat Flux option we took.

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Step (8) Examine Results

Congratulations! You have finished your first FEMAP model. Please direct all comments and questions to [email protected].

Close the .SIN file and click (A) SINDA/G Output (.SOT) Now we can examine the output file. Scroll down to the bottom of the file and notice the surface node temperatures of 34.0907 and the node 7 temperature is 25. Also note that SENGIN= 4.00000E+01. SENGIN is the total energy input into the system. Close the .SOT file. Click (B) Exit to SINDA/ATM, button and return to FEMAP.

PROBLEM #2

STEADY STATE AND TRANSIENT ANALYSIS OF A PC BOARD

FEMAP is a model builder and results processor for the SINDA/G Thermal Analyzer. Together FEMAP and SINDA/G provide a powerful and flexible thermal design system. In this problem you will see how to:

• Build geometry • Run steady-state and transient analysis • Modify your model, adding heat and cooling • Alter the input file • Create time-dependent heat sources • Post-process your model to create color temperature contours suitable for

presentations and even use animation to create a movie • Quickly view your results in SINDAPLOT, the plotting package that is included

with FEMAP. It is also easy to create output files for importing into Excel or other spreadsheets.

Outline In this problem you will create a model of a PC board. We will analyze the board under different temperature, heating and cooling conditions. In the first section we will use FEMAP to build a model that has its ends fixed at T = 25oC with a uniform heating applied to the board. We will then analyze the model with SINDA/G, compare the results with the analytical solution, and create a color contour map. Next we will add, remove and mix different temperature, heating and cooling conditions and then post-process and graph the results. The basic steps are:

1) Create a Surface 2) Select Units 3) Create a Material 4) Create a Property 5) Mesh the Surface 6) Create Load Sets 7) Save the Model 8) Run FEMAP 9) Examine the input and output files 10) Post-Process 11) Create Load Set with Convective Cooling 12) Combine Load Sets 1&2 13) Run SINDA/G 14) Examine the .SIN and .SOT files 15) Post-Process 16) Create a Time-Dependant Heat Source 17) Combine Load Sets 3&4 18) Run and Analyze the Model 19) Plot Results using SINDAPLOT 20) Post-Process with Animation

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Step (1) Create a 8”x12” Rectangular Surface Open FEMAP, if it is not open, (under Programs, SINDA ATM (FEMAP)) click the following buttons:

The Locate box appears

Enter (0,0,0) for the 1st coordinate in the pop-up box and press OK. Enter (12,0,0) for the 2nd point and press OK. Enter (12,8,0) for the 3rd point and press OK. Enter (0,8,0) for the 4th point and press OK. Press ESC or Cancel to terminate this command.

CtrlA, will automatically size the geometry in the window.

A) Geometry B) Surface C) Corners


Step (2) Select Units for the Model Click the following buttons:

The Conversion Utility box appears

A) SINDA/G B) Set Model/Library Units

Set Length to “Inches” Set Energy to “Joules” Set Time to “Seconds” Set Mass to your preference Set Temperature to “C” Click OK

In SINDA/ATM you can choose any mixture of English and Scientific units you like.

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Step (3) Create a Material


The Define Material box appears

A) Model B) Material

Click Load. Select “Copper C10200”. Click OK. The title field is automatically filled in. You can change it if you like. Click OK. A box to define a 2nd material pops up which we don’t need so Cancel or Esc.

You can select from large library of material properties or create your own libraries or manually enter the values in the property fields.


Step (4) Create a Property Click the following buttons:

The Define Property box appears

Again you are prompted to create another property. We won’t need this. Click Cancel.

A) Model B) Property

A) Fill in the Title field with “Cu Cladding”.

B) Select the material

record you just created by clicking the arrow in the Material box. The property record has ID = 1.

C) Enter “0.00615” in the

Thicknesses box. D) Click OK.

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Step (5) Mesh the Surface Click the following buttons:

The Default Mesh Size box appears Note: The default size is set to 1.


A) Mesh B) Mesh Control C) Default Size

Change this to “2” This will keep the number of nodes smaller than 100, which is the limit for the demo program. Click OK.

A) Mesh

B) Geometry

C) Surface



The Automesh Surfaces box appears

The Workplane Management box appears

Select the surface with the cursor or click Select All. Click OK.

Click the Property box and choose your property. Click OK.

You have created 24 elements on the surface, the elements have nodes at each corner, there is a total of 35 nodes. Your window should look similar to this window. Right click on the window and choose Workplane…

Uncheck the Draw Workplane box.

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Step (6) Create a Load Set Click the following buttons:

The Create or Activate Load Set box appears

Now fill the load set with entities.


A) Model C) Load B) Set

Fill in the Title field with “T=25 on ends + 8 Watts”. Notice the ID number is 1. We will fix the ends at 25o and put 8 watts of power uniformly to the surface with this load set.

A) Model

B) Load

C) On Curve


The Entity Selection… box appears

Run the cursor over the left end of the board, notice the left edge becomes highlighted. When the edge is highlighted left click on your mouse this will select the curve. Do the same for the right edge. OK. The Create Loads on Curves box appears

You are placed back in the Entity Selection box to pick another load on another curve; we won’t need this so click Cancel.


A) Select the Temperature option.

B) Fill in the Temperature field

with “25”.

C) Click OK.

A) Model

B) Load

C) On Surface

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The Create Loads on Surfaces box appears

To view the model from a different angle, press F8. The View Rotate box appears

This will rotate the view, if the previous view is desired, XY Top will restore the view. After rotating, your window should look similar to this:

Select the surface with your mouse or hit the Select All button. Click OK.

A) Pick Nodal Heat Flux option.

B) Enter “8” into the Flux

field. Click OK. Click Cancel to close the Entity Selection box that appeared.

Select Dimetric. Click OK.


Step (7) Save the Model Click the following buttons:

Before we run the analysis, let’s see what the analytical result should be. One can compute the temperature at the midpoint position by evaluating the following equation:

wdkQLT mid 8

25+=

Where: Q = 8 watts, the power input L = 12 inches, the length of the board w = 8 inches, the width of the board d = 0.00615 inches k = 9.93553 watts/inch-oC, thermal conductivity of the copper

For these values =T mid 49.55o.

A) File. B) Save As. Enter “Problem2” for your model. Don’t use spaces in your name for the time being. Click Save.

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Step (8) Run SINDA/G


The SINDA/ATM Thermal Solution Manager box appears

A) Click on SINDA/G.

B) Click Run SINDA/G.

Click Translate and run SINDA/G. We will run in the default mode, which is the steady state routine SNSOR.


Step (9) Examine the Input and Output Files

Close the .SIN file.

Exit from the FEMAP dashboard and we will post-process in FEMAP. Click Exit to SINDA/ATM.

After the program has run, click SINDA/G Input File (.SIN) found on the right side of the dashboard. This will bring up the .SIN file. As you scroll down you will notice that the file is divided into blocks. The Node Data block lists all the node numbers with initial temperature and capacitance, the Source Data block lists the power sourced at each node, the Conductor Data block list conductors constructed between the nodes and so forth. The .SIN input file is a text file that can be altered and modified as needed. You are not limited to building your entire model in FEMAP.

Click on SINDA/G Output (.SOT). Scroll down to the bottom of the file. Notice the peak temperature of 49.5489o

found on node 28. Close the .SOT file.

You can perform iterations, add equations, logic, subroutines, call libraries, etc. by altering the .SIN file. SINDA/G is an extremely powerful and flexible thermal analysis tool.

By using SINDA/G skeleton files, the changes that you make to the .SIN file can be saved and later merged in. This is especially helpful when modifications to your FEMAP model cause the translator to create a new .sin file.

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Step (10) Post-Process The results are automatically imported into FEMAP when you exit from the dashboard.

Post Data

Post Process

Click the Postprocess button. If the Post Data button is not visible. This will change the tool bar to the Post Process tool bar.

Click the Post Data button.


The Select Postprocessing Data box appears

Now click the Contour button on the right. This will draw the color contours onto your model drawing. Your drawing should look similar to this one.

Click the button (on the Status Bar, see arrow above) in the lower right hand corner that says “Off” and select Node if it is not selected already. Drag the cursor over the figure and note the node numbering and the temperatures of the nodes. Click on the button again and repeat for the other options if you like.

Select “31..temperature” in the Contour field. Click OK.

Contour

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Step (11) Create a Load Set with Convective Cooling Now let’s make a load set that has convective cooling to a portion of the board.

(This is called the Status Bar) The Create or Activate Load Set box appears


Click the Ld: 1 box located in the same area as the node button that you just selected.

Change ID to “2”. Change Title to “Convective Cooling, T=25”. Click OK.

A) Model B) Load C) On Surface



Ctrl G will redraw the picture showing that Load Set 2 is active; this is also shown in the Status Bar. Your drawing should be similar to this one.

Select the surface by left clicking on the surface of the drawing. Click OK.

A) Select Convection. B) Enter “0.002” in the Coefficient

field. C) Enter “25” in the Temperature

field. Click OK. Click Cancel on the Create Loads on Surfaces box.

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Step (12) Combine Load Sets 1 and 2


The Combine Load Data box appears

A) Model B) Load C) Combine

Select your first Load Set in the From Set box using the down arrow and click More…. Then select the convective Load Set in the same place but this time click Last One. Combined Load Set 3 has now been created.

A) Bring up the Create or Activate Load Sets box by clicking the Ld: button on the Status Bar. B) Change the title of Load

Set 3 to “1+2 Load Set”. C) Click OK.


Step (13) Run SINDA/G Prior to running the model, make sure that Load Set 3 is active. Cntrl G will redraw the loads, and use F8 if you would like to change the view. Follow the instructions in Step (8). (If an overwrite message pops up, click Yes.)

Step (14) Examine the .SIN and .SOT files. Follow the instructions in Step (9) in order to examine the .SIN and .SOT files. You will notice that the .SIN is the same as before except there is now an additional boundary node set at 25o. Additional convection conductors connect this node and the nodes on the surface. The nodal temperatures in the .SOT file are accordingly adjusted. If you like, manually change some of the conductance values in the conductance fields (the 4th column) and re-run the model.

Step (15) Post-Process Examine the results in FEMAP.

You are not limited to FEMAP when you would like to alter your models. In your text editor you can, for example, change the temperature of the boundary nodes, alter the conductance values, add nodes and conductors etc. It is possible to put in capacitance field formulas like: = CP*XMASS or replace the conductance field with: = COND*AREA/XLEN. You can add “if then” statements and other logic. SINDA/G is very powerful and flexible.

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Step (16) Create a Time-Dependent Heat Source We will model a transistor or other device that turns on intermittently by applying a transient heat source to a node. We will then perform a transient analysis.

First we need to define the time function for the heat source. Select Model, and then select Function. The Function Definition box appears

This power vs. time function you just created is shown below.

A) Select the function Type as “1..vs Time” to build a time-dependant function. B) Give the function a title. C) Enter (0,0),(1,2), (3,5), (6,0) into the X and Y fields and click More following each entry. Click OK. Click Cancel.

Power vs Time Function

0

1

2

3

4

5

6

0 1 2 3 4 5 6 7

Seconds


We will now apply this power function to a single node.



Using your cursor to navigate and left clicking, select a node where you want to supply the power. For this example node 34 was chosen (or type in “34” in the ID field).

Create a new Load Set by clicking the Ld:3 button. Change the ID to “4”. Change the Title to “Power Function”. Click OK.

A) Model B) Load C) Nodal

The x,y data can be exported to and imported from the Function Definition box to a spreadsheet using the “Get” and “Put” commands. “Put” will put the data on the clipboard and “Get” will get it from the clipboard.

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The Create Loads on Nodes box appears

Click the following:

Step (17) Create a Combined Load Set of Sets 3 and 4 As previously performed in Step (12), combine Load Sets 3 and 4. Click on the Load Set button and rename the set something like “With Power Transistor”. Step (18) Run and Analyze the Model Click SINDA/G, and click Run SINDA/G. This time we’ll choose a transient analysis.

Back at the dashboard, click TR Setup.

A) Nodal Heat Flux B) Variable C) Click the down arrow and

choose the Function Dependence you just created.

D) Enter “1” in the Flux field.

This field is a multiplier.

E) OK.

A new box appears, so click Cancel

In the SINDA/ATM dashboard (as seen in Step 9), click the Specify Initial Conditions button The Initial Conditions Setup box appears Set the Uniform Initial Temperature to 25o OK.


The Transient SINDA/G Solution Setup box appears Click the following buttons:

Click Translate and run SINDA/G. (If you would like to change the TIMEND or OUTPUT fields for subsequent runs you’ll need to Click Set Operations Block to incorporate the changes you just made.) Examine the .SIN and .SOT files as performed previously. You will notice that the power function information is contained in an array listed in the ARRAY DATA block, you can modify this array if you like, the first number is the array name. The power function that uses the array is called in the SOURCE DATA block with the SIT function. In the .SOT file you can see the temperatures listed for all the nodes at each output time. Step (19) Plot the Results Using SINDAPLOT

A) SNDUFR B) Fill in the TIMEND field with “20”. C) Fill in the OUTPUT field with “0.2”. This will produce a transient run for 20 seconds with node temperatures written to the .SOT file every 0.2 seconds. (SNDUFR is one of many transient routines available.) OK.

Click SINDAPLOT then SINDA Output File in the pop-up box. Next click Select and then Quick Plot. A temperature vs. time plot for all the nodes will then be drawn.

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Your plot should look similar to the diagram above. You can zoom in on a section of the plot by clicking Plot, Zoom. Left click to draw a box around the desired section and left click again. Repeat this if you like. UnZoom under the Plot button will redraw the plot to the original size.

SindaPlot is a full-featured program. You can select data from different model runs to plot together and there is even an equation editor. Under the Plot, List commands you can select data points to copy into a spreadsheet or text editor. Close SindaPlot and return to the SINDA/ATM dashboard. Step (20) Post-Process with Animation Because FEMAP used bitmap images to construct the temperature contour drawings you will be limited to the number of frames that can be constructed. The number of frames is limited by your computer’s amount of RAM, virtual memory and video settings etc. So to reduce the amount of frames, increase the Output time to 1 sec. A) On the SINDA/ATM Dashboard, click TR Setup, change the OUTPUT field to “1”. B) Click OK. C) Click Set Operations Blocks. D) Click OK on the Caution box that appears. E) Click Run SINDA/G. F) Return to FEMAP by clicking Exit to SINDA/ATM Then repeat the steps for importing the data just like you did in Step (10). Then enter “31..Temperature” in to the Deformation field.


Now you will need to click the View Select button on the top tool bar as shown in the figure on the following page.

The View Select box appears, click these buttons:

View Select

A) Select Animate-MultiSet. B) Check Contour. C) Check Skip Deformation. D) Click Deformed and Contour Data….

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The Select PostProcessing Data box appears, chose, as shown below, the beginning and end times for the animation interval you wish to view. Increase the increment size if you wish. Placing an n in this box will animate every nth output set.

Now click the following buttons:

A) View B) Advanced Post

C) Animation


The Animation Control box appears

This will bring up the VCR-like tool bar to control the animation. You can control the speed, pause, and step forward or backward frame by frame. Set the Half function on, this will cause the animation to run forward in time and then start over instead of running forward and then in reverse. In the next tutorial you will import CAD geometry, apply loads to the part, then mesh it. In the limited demo version you will not be able to analyze it. However there is a .MOD file that you will open that shows the temperature contours. You will then be shown how to view iso-temperature surfaces and cutting planes through the part.

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PROBLEM #3

IMPORTING CAD GEOMETRY

It very easy to import all the major types of CAD geometry into FEMAP. This makes it easy to perform thermal analysis on complex parts. In this problem you will follow these steps:

1) Import CAD geometry 2) Apply loads to several surfaces 3) Mesh the part 4) View the post-processed model with Dynamic Cutting Planes

Step (1) Import CAD Geometry Click: A) File, Import, Geometry… Find the file “CadPart.X_T” in the C:\SGDEMO\FEMAP\Examples directory and open it and click OK on the pop-up box.

B) Change to the Rendered Solid geometry by clicking on the top tool bar.

Now you will be able to rotate the part with your mouse.


Step (2) Applying Loads A) Rotate the part so that you can select the inner surfaces of the Guide Boss (the tube) and the inner surfaces of the slot in the base plate. B) Apply a temperature load of Temperature = 230 to the inside of the Guide Boss by selecting Model, Load, On Surface…, just like you did in the previous problems. Enter a title for the load in the pop-up box. C) Apply convection of Temperature = 70 with a coefficient of 5 to the inside surfaces of the slot in the base plate.

Selecting the inner boss surface.

Step (3) Meshing the Part A) Click the following: Mesh, Geometry, Solids…. Make sure the Tet Meshing option is checked on the pop–up box and take the default parameters by clicking OK. Select a material as you did in the previous examples in the Define Material box and click OK. In the Automesh Solids pop-up box make sure the boxes are unchecked on Surface Mesh Only and Midside Nodes. You haven’t made a property yet so click New Prop… if you want to name the property and select your material, OK. The mesh will now be constructed. B) Click Ctrl Q, and in the View Quick Options click Geometry Off. Uncheck the Node box in the Mesh section and click Load/Constraint Off and then Done. This will show the mesh in a clearer manner. You have 2371 nodes and 11,470 conductors in this mesh. If you only have the demo version you won’t be able to run the analysis so we will open the analyzed model in the next step. The analysis takes about 30 seconds on 1.4 GHz machine using the SNSOR routine.

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Step (4) Viewing the Post-Processed Model with the Dynamic Viewing Options A) Close FEMAP and reopen it. The file is too large to save in the demo mode. Open “CadPart.MOD” located in the in the C:\SGDEMO\FEMAP\Examples directory using the File, Open, commands. You should see a color contour model of the part. B) Click View, Advanced Post, Dynamic Cutting Plane… Grab the control button with your mouse (see the figure below) and drag it back and forth and watch the cutting planes move through the part. The colors don’t show in the demo mode. By clicking on Plane… you can define other planes and opening Methods^, will allow you to define planes by clicking on nodes, points, normals, etc.

Dynamic Cutting Plane view of temperature contours

We hope you enjoyed this short tutorial introducing you to some of the power and flexibility of the FEMAP model builder with the SINDA/G analyzer. Please direct all comments and questions to: [email protected]


NOTES

138838194-92358648-FEMAP-Sindag.pdf

Documents

material box

property box

density box

default mesh size box

thicknesses box

popup box

model b material

specific heat box