Pan

Question 1

What is statically indeterminate?

Answer 1

Reaction forces cannot be resolved using balance of forces due to the redundant force

Question 2

What is the equation for bending moment?

Answer 2

M = Px

Question 3

What is the equation for stress?

Answer 3

M.y/ I

Question 4

What is I? What is the equation? (2)

Answer 4

The second moment of the cross section

Integral of y^2, between d/2 and -d/2 —> bd^3/ 12

Question 5

What are the governing equations for beam deflection? (2)

Answer 5

d^2u/ dx^2 = M/ EI

Angle of rotation = du/ dx

Question 6

BD) What is the equation for max stress?

Answer 6

6PL/ bd^2

Question 7

BD) When is the angle of rotation a maximum, if a beam has length L?

Answer 7

When x=L

Question 8

What is the equation for axial stress?

Answer 8

Pr/ 2t
P = pressure
r = radius
t = thickness

Question 9

What is the equation for hoop stress?

Answer 9

Pr/ t
P = pressure
r = radius
t = thickness

Question 10

What is the equation for torque?

Answer 10

F.r

Question 11

What is the equation for shear stress?

Answer 11

Tr/ J
T = torque
r = radius
J = polar moment of the cross section

Question 12

What is the equation for J? What is J equal to in terms of I?

Answer 12

Pi/2. R^4

I = J/2