Learning Forum

[hassam]

I am trying to validate my analytical results using ansys model. 

I have used following equation for thermal analysis to generate stress in a composite cylinder

 

Parameters for analysis are given below. I have used Fourier equations to find out the temperature at the outer radius of inner cylinder as 60 C.

 

Inner cylinder
units
 
Outer cylinder
units


Inner radius
5
mm
 
inner radius
13
 
mm


Outer radius
13
mm
 
outer radius
25
 
mm


Elastic Modulus
234000
Mpa
 
Elastic modulus
120000
 
Mpa


Posission ratio
0.44
 
 
poission ratio
0.34
 
 


Density
 
8.45
g/cm3
 
density
4.45
 
g/cm3


CTE
 
1.28E-05
C-1
 
CTE
9.80E-06
 
C-1


 
 
 
 
 
 
 
 
 


Inside Temperature
120
C
 
Inside Temperature
60
 
C


Outsiside Temperature
60
C
 
Outside Temperature
20
 
C

 

The analytical solution is given below

 

Ansys model

After i apply the above boundary conditions i get the following temperature distribution 

I dont understand why the second cylinder shows a constant temperature change?

I want to know if my approach is right to solve this thermal problem and get the desired results for the analytical problem mentioned above

 

 

 

[Rob]

Check the contact pair settings between the two bodies: I suspect you're not passing heat from the brown-ish zone to the blue-ish one.