Fatigue analysis acc. to TRD 301 App.1
for cylindrical components
Component and operating data:
Value
Unit
Outside diameter of the vessel
d
os
mm
Wall thickness of the vessel
e
ms
mm
Stress concentration factor
α
m
= 1.0
= 2.6
= 2.9
= 3.2
= 3.5
= 5.0
Material properties:
Value
Unit
Elastic modulus
E
MPa
Poisson's ratio
ν
Differetial thermal expansion coefficient
β
L diff
10
-6
1/K
Density at 20°C
ρ
20
kg/m³
Heat conductivity
λ
W/m/K
Differential heat capacity
c
p diff
J/kg/K
or
Thermal diffusivity
D
th
mm²/s
Ultimate tensile strength
R
m 20
MPa
Yield strength
R
e
MPa
Cyclic loadings data
[h.] [bar] [°C] (max. 1000 points)
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