2. Thermoelasticity (Thermal stresses)
L LT
L
Changes in temperature produce expansion or contraction of structural materials, resulting in
thermal strains and thermal stresses.
T
L
T
L
3. Thermoelasticity (Thermal stresses)
There are two occasions when thermal stresses can be induced in a structure:
1. The structure is constrained and unable to expand/contract freely
2. The structure is subjected to a non-uniform temperature variation
13.
9
6
3
2
Given:
200 10 Pa
0.025
0.125
0.3
11 10 /
7700 /
10000
1000 /
o
o
E
a m
b m
C
kg m
rpm
C C m
15. A long pipe of radius a = 500 mm, thickness t = 10mm supports a uniformly distributed end moment Mo as
shown below. Determine the magnitude of Mo if the deflection at the end x = 0 is 0.2 mm. E=200 GPa and
v=0.3.
The following formulae, in usual notation, may be used without
proof: