Simplified elasto–plastic fatigue analysis
according to KTA-rules (KTA 3211.2)
Input data
Kind of material
low-alloy C–steel
unalloyed C–steel
austenitic, stainless steel
low-alloy C–steel casting
unalloyed C–steel casting
austenitic, stainless steel casting
Elastic modulus
E
N/mm²
Tensile strength
R
m
N/mm²
Compare stress value
S
m
N/mm²
Half stress intensity range
S
a
N/mm²
Stress range
S
n
N/mm²
Calculate
Results
S
a
*
N/mm²
Permissible stress cycles number
N
zul
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