fiber stress

Solution to Problem 507 | Flexure Formula

Problem 507
In a laboratory test of a beam loaded by end couples, the fibers at layer AB in Fig. P-507 are found to increase 60 × 10-3 mm whereas those at CD decrease 100 × 10-3 mm in the 200-mm-gage length. Using E = 70 GPa, determine the flexural stress in the top and bottom fibers.
 

Flexure Formula

Flexure Formula
Stresses caused by the bending moment are known as flexural or bending stresses. Consider a beam to be loaded as shown.
 

Flexure of a beam

 

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