Machine Elements Design |
HW 4 |

Student Name: |
ST. NO. |

1-
A cylinder has an inner diameter d= 80 mm, has A pressure of** **

**p= (ST. No.) x 5 + 5** **MPa**. The cylinder head is secured by 12 bolts made of steel
EN1A. Take a factor of safety SF = 6, Find the __bolts size (M?)__.

2-
Find __number of bolts (n)__ to carry a load of **F = (ST. NO.) X 1000
N**, if the bolt size is **bolt size = M(ST. NO. + 1)**, and the bolt
material is EN3, the factor of safety SF = 10.

3-
8 bolts size M10 are to withstand a tensile force **F _{t} =
(ST. NO.) x 3900 N**, taking factor of safety SF = 5, Find the

4-
10 bolts size M12 are to withstand a tensile force **F _{t}
=(ST. NO.) x 5000 N**, the bolts are made of steel EN8, taking factor of safety
SF= 10, find if