 |
 |
Experiment
Measure the deflection at two points, x=a and x=b, on the beam with dial gages as a function of load. Plot deflection y versus load P and determine the slope of the lines.
Wooden Cantilever Beam
Experiment
Measure the deflection at two points, x=a and x=b, on the beam with dial gages as a function of load. Plot deflection y versus load P and determine the slope of the lines.
Theory
Results
Assume theoretical y/P ratio and experimental y/P ratio are equal at "a" and "b" and solve for E at both places. Use the following as reference values.
averaged from US-grown, 12% moisture-content values in
Common
Species NameModulus of
Elasticity (Msi)cedar 1.1 pine 1.5 oak 1.5 poplar 1.6 red oak 1.8 douglas fir 1.8 if not specified 0.9 to 1.8
Wood Handbook Chapter 4 - Mechanical Properties of Wood
- June 2006, Lowes
- 1"x3"x6' poplar $5.88
- 1"x3"x6' red oak $8.44
- 1"x3"x6' Douglas fir $3.53
