6002 Lab#5: Linked thermal-stress Analyses in ANSYS, page 1

Engineering 6002 - Ship Structures I

Lab#5

Combined thermal-stress analysis in ANSYS By C. Daley

Overview

In this lab we will model heat flow in a simple cantilever.

Once again, we will use SpaceClaim to create the geometry

model of the problem, and then use ANSYS to model the

structural behavior. We will explore the stress, buckling and

vibration analysis features of ANSYS.

ANSYS Model #5 – Pinned Rectangular column

Step 1: Think about a solid object. Here is what mine ended up as – you can do something like

this or different.

Step 2:think about where you will support this gizmo, and what face you will set to 1000C.

Step 3: open ANSYS Workbench 19.0

1) First, save the (empty) project as Thing5.wbpj 2) The left-hand window shows a set of analysis type options. Select Steady-State Thermal

and drag the icon to the right, placing it in the Project Schematic window.

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Step4: open Geometry and create the CAD model

1) Like I said – this is what I did. You make something

Step5: open Model and create the Finite Element model

1) Return to the ANSYS window, and click on the Model feature in the Project window.

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This will start the ANSYS ‘Mechanical’ program, to setup the actual finite element

model.

2) The Mechanical window shows the 1 component.

At first the model is shown with no mesh or loads yet. On the left is a list of the model

features that have to be set. By default, the material to be used will be structural steel.

Select the Mesh icon in the Project and right-click Generate Mesh.

My meshed the body is ;

3) Now Under Steady-State Thermal, insert a Temperature and select a face to apply it to.

Set the temp to 1000C. Now insert Temperature again and apply 15C to a different face.

Here is mine.

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Now you can the system/

4) To specify output, right click on Solution in the tree, and select Insert, then Thermal, then

Temperature.

Here are the steady state temperatures;

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Step6: Add the a stress/deflection Analysis

1) The left-hand window shows a set of analysis type options. Select Static Structural and

drag the icon to the right, on top of the Solution component of the Steady-State Thermal analysis. The red boxes will happen as you drag static structural over the solution part of

the thermal analysis. Be careful. When you release the mouse, a linked system will be

created.

You should see the two linked systems as;

2) Now if you re-open the ANSYS Mechanical you will see additional analysis

components.

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You should support the model (enough so it wont move).

Now insert Total Deformation. Solve the model and you should see what happens. Mine

is;

This shows one example of combining the output of one kind of model as the input for

another (stress/deflection).

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Self Study Exercises: Student:______________

Exercise #1 – Drill a 10mm hole through your body, and apply 1000C to the inside

of the hole. For the structural analyses, support the body by fixing the surface of the

hole you drilled.