311 Ch16

708 views

Published on

Published in: Health & Medicine, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
708
On SlideShare
0
From Embeds
0
Number of Embeds
34
Actions
Shares
0
Downloads
15
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

311 Ch16

  1. 1. <ul><li>VIII.) Deflection of Beams </li></ul><ul><li>A.) Reasons to Consider Deflections </li></ul>
  2. 2. B.) Assumptions in Deflection Formulas 1.) Stress does not exceed Proportional Limit 2.) Beam Material is: a.) Homogeneous b.) Has Linear Stress-Strain Curve c.) Modulus of Elasticity is same in Tension and Compression 3.) Plane sections remain plane
  3. 3. B.) Assumptions in Deflection Formulas 4.) Beam has a vertical plane of Symmetry and Loads and Reactions act in this plane, perpendicular to the longitudinal axis of the beam.
  4. 4. B.) Assumptions in Deflection Formulas 5.) Deflections are relatively small, and the length of the elastic curve (deformed beam) is the same as the length of its horizontal projection.
  5. 5. B.) Assumptions in Deflection Formulas 6.) Deflection due to shear is very small therefore negligible.
  6. 6. C.) Using Diagrams & Formulas to Compute Deflections (Appendix H of Text) W = Total Load (kips,N) w = Distributed Load (kips/in,N/m) I = Moment of Inertia (in 4 ,m 4 ) l = Span Length (in,m) x = Distance from left support to location you wish to compute deflection. a & b are defined by the diagram.

×