11_ch 05 Mechanical Design budynas_SM_ch05

# 11_ch 05 Mechanical Design budynas_SM_ch05 - For the third...

This preview shows page 1. Sign up to view the full content.

Chapter 5 125 5-11 The material is brittle and exhibits unequal tensile and compressive strengths. Decision: Use the Modified Mohr theory. S ut = 22 kpsi, S uc = 83 kpsi (a) σ x = 9 kpsi, σ y = − 5 kpsi. σ A , σ B = 9, 5 kpsi. For the fourth quadrant, | σ B σ A | = 5 9 < 1, use Eq. (5-32 a ) n = S ut σ A = 22 9 = 2 . 44 Ans. (b) σ x = 12 kpsi, τ xy = − 3 kpsi ccw. σ A , σ B = 12 . 7, 0 . 708 kpsi. For the fourth quad- rant, | σ B σ A | = 0 . 708 12 . 7 < 1, n = S ut σ A = 22 12 . 7 = 1 . 73 Ans. (c) σ x = − 4 kpsi, σ y = − 9 kpsi, τ xy = 5 kpsi. σ A , σ B = − 0 . 910,
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: . For the third quadrant, no solution exists; however, use Eq. (6-32 c ) n = − 83 − 12 . 09 = 6 . 87 Ans. (d) σ x = 11kpsi, σ y = 4kpsi, τ xy = 1kpsi. σ A , σ B = 11 . 14, 3 . 86 kpsi. Fortheﬁrstquadrant n = S A σ A = S yt σ A = 22 11 . 14 = 1 . 97 Ans. 30 30 S ut ± 22 S ut ± 83 ± B ± A –50 –90 ( d ) ( b ) ( a ) ( c )...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern