STRESS CONCENTRATION FACTORS CALCULATORS


Dimensional changes and discontinuities of a member in a loaded structure causes variations of stress and high stresses concentrate near these dimensional changes. This situation of high stresses near dimensional changes and discontinuities of a member (holes, sharp corners, cracks etc.) is called stress concentration. The ratio of peak stress near stress riser to average stress over the member is called stress concentration factor.

Stress concentration factors calculators have been developed to calculate theoretical stress concentration factors(Kt) in elastic range for different type of stress raisers and loading conditions. The calculator calculates theoretical stress concentration factors for loading types of tension, bending and torsion.


Type of Stress Raiser Stress Raiser Definition
Shoulder fillet in stepped circular shaft
U-shaped circumferential groove in circular shaft
Large circumferential groove in circular shaft
V-shaped circumferential groove in circular shaft
Transverse circular hole in round bar or tube
Opposite shoulder fillets in stepped flat bar
Round pin joint with closely fitting pin in finite-width plate
Central single circular hole in finite-width plate
Eccentric single circular hole in finite-width plate
Central elliptical hole in a member of rectangular cross section (plate)
Single circular hole in infinite plate
Two equal circular holes in infinite plate
Rectangular hole with round corners in infinite plate



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