# HW6 - ME363 HW6 Fall 2011 Name Due 1 What is the force...

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

ME363 HW6 Fall 2011 Name Due: 12/06/11 1. What is the force required to punch a square hole, 150 mm on each side, from a 1-mm thick 1008 steel sheet using flat dies (use the table on the back side)? 2. Estimate the minimum percent scrap possible in producing round blanks of 20 mm in diameter from a strip of 40 mm wide if the clearance between the blanks is to be one-tenth of the radius of the blank. 3. A 20-gage (0.0359 in) steel sheet is bent to a radius of 0.5 in. Assuming that its yield stress is 40,000 psi and Young’s modulus is 29x10 6 psi, calculate the following: (a) Considering the springback, calculate the radius of the bent part to achieve the radius of 0.5 in. (b) The required bend angle to achieve a 90 ° bend after springback has occurred. Use the following relationship.

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 2

HW6 - ME363 HW6 Fall 2011 Name Due 1 What is the force...

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

View Full Document
Ask a homework question - tutors are online