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This model makes it easy to understand how shear stresses develop in beams. It was inspired by a photo in the 1976 textbook, Mechanics of Materials by E.P. Popov. To learn more or see additional models, go to http://www.civil.uwaterloo.ca/brodlan.... You might also like our Beam Bending Playlist at • 01) Strain in a Beam And our Engineering Models Channel / @engineeringmodels 0:00 What You Can Learn From the Model 0:18 Imagine The Model to Be Part of A Longer Beam 0:34 Think About the Bending Stresses That Would Be Produced 1:03 Think About How These Stresses Generate Moment 1:46 How Shear Loads and Stresses Arise 2:41 How Shear Loads (Stresses) Are Different from Normal Loads (Stresses) 3:10 Shear Forces At Another Location in the Flange 3:31 Shear Forces Between a Flange and the Web 3:50 Shear Forces at Several Locations in the Web 4:20 Forces in Fibers Below the Neutral Axis 5:01 Converting Forces to Stresses 6:05 Plotting Shear Stress as a Function of Position 6:45 How to Calculate Shear Flow in the Flanges 7:43 How to Calculate Shear Flow in the Web 7:53 The Shear Flow Diagram 8:05 The Shear Flow is Consistent with the Shear (V) in the Beam 8:48 Making Sense of These Calculations Using V=dM/dx 9:28 Closing and Credits 9:42 ** A Worked Example **