{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

SolutiontoQuiz1

# SolutiontoQuiz1 - 30,000 lb If the modulus of the aluminum...

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

1 EMA 3702 Mechanics of Materials Pop-up Quiz #1 Date: 9/2/11 Name: ________________________________ Panther ID:__________________________________ 1. The two portions of wood AB are glued together along a plane forming an angle with the horizontal. Knowing that the ultimate stress for the glued is 3.0 ksi in tension and 1.5 ksi in shear, determine the value of if both the shearing condition the normal-stress condition reach the same factor of safety. [6 pts.]

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

View Full Document
2 2. An aluminum sample with a total area of 1 in 2 and an original length of 10 in is subjected to a load of
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 30,000 lb. If the modulus of the aluminum is E = 10,000,000 psi, determine the true strain of the sample. [4 pts.] Solution: A = 1 in 2 and P = 30,000 lb. Hence Engineering stress s = P/A = 30,000 psi Engineering strain e = s/E = 30,000/10,000,000 = 3/1000 = 0.003 True strain = ln (1 + e) = ln ( 1+0.003) = 0.002996 Or elongation = = Pl/AE = (30,000 x 10)/(1 x 10,000,000) = 0.03 eng strain e = /L = 0.03/10 = 0.003 True strain = ln ( 1+e) = 0.002996...
View Full Document

{[ snackBarMessage ]}

### Page1 / 2

SolutiontoQuiz1 - 30,000 lb If the modulus of the aluminum...

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

View Full Document
Ask a homework question - tutors are online