This video investigates the stresses that arise in a beam element subjected to different types of loads. The focus is set on the torsional loads that cause twisting of the section resulting in the so called St. Venant Stresses. Furthermore the twisting gives rise to the warping action that induces large bending stresses in the beam flanges. The video concludes with an experiment of a 3D printed section subjected to eccentric and concentric loading.

References:
[1] J. M. Gere and B. J. Goodno, Mechanics of Materials, Cengage Learning, 2013.
[2] P. A. Seaburg and C. J. Carter, "Torsional Analysis of Structural Steel Members," American Institute of Steel COnstruction Inc., United States of America, 1997.
[3] P. H. Lin, "Simplified Design for Torsional Loading of Rolled Steel Members," Engineering Journal/ American Institute of Steel Construction, 1997.
[4] A. F. H. D. C. Iles and A. S. Malik, "Design of Steel Beams in Torsion," The Steel Construction Institute, Berkshire, UK, 2011.