Fatigue strength under pulsating stress

Symbol σFlimN
Unit N/mm²
Attribute-ID stplus_result_vdi_2736_2014_fatigue_strength_under_pulsating_stress
Numeric ID 10020
Value Type PMTechValue

When "Acc. to VDI 2736:2014" is selected, σFlimN is determined from the tooth root temperature and the number of load cycles for selected materials:

Material designation Calculated from the equations in VDI 2736 for
POM POM
PA66 PA66
PET PET with oil lubrication
PEHMW PA 6 - grease lubrication
PBT High molecular weight PE with water-oil emulsion lubrication
Laminates Coated press materials (Hgw)

To ensure that the internal calculation for the material is correctly controlled, the material designation must correspond exactly to the value in the above table.

When "from measurement data" is selected, σFlimN is determined using the specified measurement data and the existing number of load cycles.

When "from material" is selected, the value for σFlimN for the material is used.