Bending of Beams
The Engineer posted on October 23, 2006 | 22531 views

The stress in beam due to a bending moment can be derived with three principals: geometry, Hooke's Law, and equilibrium.


Hooke's Law:



  • Beam is initially straight and unstressed
  • Beam material is homogeneous and isotropic
  • Material preperties are the same in tension and compression
  • Plane cross sections remain plane after bending

Second Moment of Area of Common Shapes

Rectangular cross-section

Circular cross-section

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