SolutionsHW5

# SolutionsHW5 - HW#5 Problem 7.12 a To Find Does the single...

This preview shows pages 1–3. Sign up to view the full content.

HW #5 Problem 7.12 a. To Find: Does the single crystal yield under the given applied stress? If not, at what stress will it yield? b. Given: = 43.1 o = 47.9 o CRSS = 20.7 MPa Applied stress = 45 MPa c. Assumptions: (i) The applied force is uniaxial (ii) Single crystal (iii) The metal is pure (alloying agents/impurities can change the value of CRSS . (iv) The testing is done at room temperature – the value of CRSS can change with temperature. (v) The values of    CRSS and applied stress are accurate. d. Solution: Method 1: Calculate applied R and compare with CRSS. psi) (3181 MPa 22.0 = ) 47.9 )(cos 43.1 MPa)(cos (45 = cos cos = R   R > CRSS Method 2: Calculate yield strength and compare with applied stress. MPa 42.29 = ) 47.9 (cos ) 43.1 (cos / MPa) (20.7 = cos cos / CRSS Y > y The resolved shear stress is greater than the critical resolved shear stress. Hence, the single crystal will yield. The applied stress is greater than the yield strength. Hence, the single crystal will yield.

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

View Full Document
Problem 7.13 a. To Find: (a) Most favored slip direction (b) CRSS b. Given: = 28.1 o = one of 62.4 o , 72.0 o , 81.1 o Yield strength y = 45 MPa c. Assumptions: (i) The applied force is uniaxial (ii) Single crystal (iii) The metal is pure alloying agents/impurities can change the value of CRSS . (iv) The testing is done at room temperature – the value of
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 12/08/2011 for the course MSE 2090 taught by Professor Leoindzhiglei during the Fall '10 term at UVA.

### Page1 / 5

SolutionsHW5 - HW#5 Problem 7.12 a To Find Does the single...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online