Bolt Stiffness

Question 1

How many steps to determine the bolt stiffness ?

Answer 1

There are 5 steps to evaluate the bolt stiffness

Question 2

What are the steps to finishing bolt stiffness in order

Answer 2

1.Grip
2. Bolt length
3. Threaded bolt length
4. Unthreaded gripped length
5. Threaded gripped length

Question 3

How can you group the steps into 3 parts ?

Answer 3

1. Grip length
2. Length of bolt and Threaded length of bolt
3. Unthreaded gripped length, Threaded gripped length

Question 4

What’s the equation for finding the length of the bolt for Bolt and nut configuration ?

Answer 4

L = l + H

Question 5

What’s the equation for the grip length of a bolt and nut configuration?

Answer 5

l = sum of the thickness between under bolt head up to not including nut

Question 6

What’s the equation for finding the threaded length of the bolt ?

Answer 6

Lt (L) see In textbook

Question 7

What’s the equation for finding the unthreaded gripped length ?

Answer 7

ld = L - Lt

Question 8

What’s the equation for finding the threaded gripped length ?

Answer 8

lt = l - ld

Question 9

What’s the equation for bolt stiffness

Answer 9

(At x Ad x E) / (Atld + Adlt)

Question 10

What is the grip length for the Bolt no nut configuration ?

Answer 10

l = h + (1/2) (the less of tf or d)

Question 11

What is the length of the bolt for a bolt and no nut configuration ?

Answer 11

L = h + 1.5d