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ENGR 220 Section 6.1~6.2 BENDING.

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Presentation on theme: "ENGR 220 Section 6.1~6.2 BENDING."— Presentation transcript:

1 ENGR 220 Section 6.1~6.2 BENDING

2 Internal Forces

3 Method of Sections

4 Internal Forces in 2-D

5 Shear and Moment Diagrams
For beams we can calculate the shear and moment diagrams as a function of position along the beam. Internal normal force will not be considered in that most loadings are vertical on a beam and were are primarily concerned about shear and bending failures.





10 Graphical Method for Shear and Bending Moment Diagrams

11 Sign Convention Shear ~ positive direction is denoted by an internal force that causes a clockwise rotation on which it acts. Moment ~ positive direction is denoted by and internal moment that causes a compression or pushing on the upper part of the member


13 Graph the internal forces shear force and bending moment along the axis of the beam.


15 7-87: Draw the shear and loading diagrams


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