Design Home
Stress Concentration
Introduction
K Calculators
Notches
Centered Hole
  Under Axial Force
Off-Center Hole
Groove
Shoulder
Square Box Beam
Right Angle Beam
Resources
Bibliography
Machine Design

How-to, in-depth technical articles for machine design engineers

Power Transmission

Gear drives, bearings, motors, clutches, couplings, machine controls, sensors and components.

Design-2-Part

How OEM's can make their parts better, faster, and more efficient.

Quality Magazine

Techniques to improve quality on the shop floor and in manufacturing planning.

more free magazines

Materials

Design

Processes

Units

Formulas

Math
Diagrams and Calculator Inputs
 Slab Width H =   
 Slab Thickness h =  << H
 Hole Diameter d =   
 Distance from Hole to Edge c =  H/2

Stress Concentration Factors

Input data
H = 100 mm
d = 10 mm
Answer
 2.73
 
 3.04
 
Note that the stress concentration factors are calculated from experimental data using curve fitting, so only two decimal places are given.