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Home / Examples / Coupled Analysis / Thermal-Stress Analysis [Watt/Galileo] / Example 1: Deformation due to the Temperature Gradient #1 - Single Material

Example 1: Deformation due to the Temperature Gradient #1 - Single Material


General

  • The deformation due to the temperature gradient on a singe-material cube is analyzed.
     

  • The temperature distribution is solved in the thermal analysis (Watt) and it can be treated as a reached temperature for a thermal load.
    The stress is solved with the thermal load taken into account in the stress analysis (Galileo).
     

  • The deformation, the displacement distribution, and the stress distribution are solved.
     

  • Unless specified in the list below, the default conditions will be applied.
     

  • Obtain this session's project file. (Right-click and choose 'Save link as')


  • Results will vary depending on Femtet version and the PC environment.

 

Analysis Space

Item

Settings

Analysis Space

3D

Model Unit

mm

 

Analysis Conditions

Select Thermal analysis and Stress analysis.

Item

Settings

Solver

Thermal Analysis [Watt]
Stress Analysis [Galileo]

Thermal-Analysis Type

Steady-State Analysis

Options

N/A *

* [Thermal Load] is selected by default for the thermal-stress coupled analysis.

 

The Step/Thermal Load tab is set as follows.

Tab

Setting Item

Settings

Step/Thermal Load *

Reference Temperature

0 [deg]

* The reached temperatures come from the thermal analysis.

Model

The model is a cubic solid body. The material is the polycarbonate. The temperature is fixed at the top and bottom faces.

Body Attributes and Materials

Body Number/Type

Body Attribute Name

Material Name

0/Solid

CUBIC

002_Polycarbonate(PC) *

* Available from the material DB

Boundary Conditions

Thermal analysis is performed based on the boundary conditions below. The resulting temperature distribution is forwarded to stress analysis.

Boundary Condition Name/Topology

Tab

Boundary Condition Type

Settings

100degree/Face

Thermal

Temperature

100 [deg]

0degree/Face

Thermal

Temperature

0 [deg]

Results

The temperature distribution as a result of Watt is shown below.

 

The next figure shows the vectors of displacement as a result of Galileo following Watt.

The expansion is larger at the top of the model.