Eurocode 3 Classification Parameters (Non-Welded)
The parameters for non-welded calculations are listed in both the Assign Material tab and the My Material tab of the Assign Material dialog.
The defaults are with respect to material = steel.
The following are the parameters listed in Assign Material tab.
Parameter | Description |
---|---|
Size Effect (Ks) | default = 1.0 |
Temperature Factor (Kt) | default = 1.0 |
Surface Treatment (Ksur) | default = 1.0 |
Safety Factor for Strength (Mf) | default = 1.0 |
Loading Factor (Ff) | default = 1.0 |
The following are the parameters listed in My Material tab.
Parameter | Description |
---|---|
Detail Category for nominal (Δ σc, Basic) | Listed in SN tab (default = 160 N/mm2) |
Detail Category for shear (Δ τc, Basic) | Listed in SN tab (default = 100 N/mm2) |
Number of cycles at Constant Amplitude Fatigue Limit – nominal (NDσ) | Listed in SN tab (default = 5e6 cycles) |
Number of cycles at Cut-Off Limit – nominal (NLσ) | Listed in SN tab (default = 1e8 cycles) |
Slope before Constant Amplitude Fatigue Limit – nominal (m1σ) | Listed in SN tab (default = 3.0) |
Slope before Cut-Off Limit – nominal (m2σ) | Listed in SN tab (default = 5.0) |
Number of cycles at which the reference value of the fatigue strength is defined. (greyed out) – nominal (Ncσ) | Listed in SN tab (default = 2e6 cycles) |
Number of cycles at Cut-Off Limit – shear (NLτ) | Listed in SN tab (default = 1e8 cycles) |
Slope before Constant Amplitude Fatigue Limit – shear (m1τ) | Listed in SN tab (default = 5.0 ) |
Number of cycles at which the reference value of the fatigue strength is defined – shear (Ncτ) | Listed in SN tab (default = 2e6 cycles) |
Desired number of cycles (N) | Listed in SN tab (default = 2e6 cycles) |
Formulation
- Query Stress σxx, σyy, τxy (max and min across all loadcases)
- Find the stress ranges (max – min) = ( Δσxx, Δσyy, and Δτxy)
- Multiply Stress Range from Loading Factor Δσ
- Calculate Corrected Fatigue Strength ΔσC and ΔτC
-
- Calculate Constant Amplitude Fatigue Limit ΔσD and ΔτD
-
- Calculate Stress at Cut-off Limit ΔσL and ΔτL
-
- Calculate Permissible Number of Cycles Nperm
- Component Damage
-
- Equivalent Damage
EN 1999-1-3:2011-11 (November
2011)
. Permission to use and reproduce information contained in the
Eurocode 3 standards was granted by DIN.