Lab 3 - Deformation and Failure of Beams

Lab 3 - Deformation and Failure of Beams - I) Procedure:...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
I) Procedure: Same as outlined in the lab manual. Rectangular Beams II) Questions: 1. See attached rectangular beam table. Stiffness = Load/Deflection = P/d 2. K(stiffness)= width*height(Area)*E/length Stiffness depends on width, height, young’s modulus and length 3. P(Strength)= K*deflection= width*height*E*deflection/length Strength depends on all of the same variables mentioned above 4. An important source of error in this experiment was the assumption that the bar was made of a uniform material. This incorrect assumption has some affect on how the sample acted under a given loading. Additionally, the sample had to be preloaded some of which may have been unread, causing some error. Finally, once the bar begins curving, the LVDT reading becomes not as accurate. 5. By loading bar one edgewise instead of flat, no change in stiffness will occur. This is easily seen by the stiffness equation. By simple positioning changes, the area, length and young’s modulus will not differ.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/29/2008 for the course ENGRD 2020 taught by Professor Zehnder during the Spring '06 term at Cornell University (Engineering School).

Page1 / 2

Lab 3 - Deformation and Failure of Beams - I) Procedure:...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online