Stress-Strain Diagrams
Axial Loading
Torsion
Beams
Everything else!
100
What is the name of the region on a stress-strain diagram where Hooke's Law, E = stress/strain, holds true?
Elastic region or linear elastic region
100
If a rod is axially loaded, where in the cross section in is stress the greatest?
Stress is the same at all points on the cross section
100
A lawnmower motor is rated for 1650 ft*lb/s. What is this in horsepower?
3 hp
100
Name that beam!
Cantilever
100
What is the lowest possible value for Factor of Safety?
1
200
What is the stress called at point 4?
Failure or fracture stress
200
Which section experiences the greatest axial stress?
BC
200
What is a Hertz?
1 rev/s or 1 cycle/s
200
What is the difference between the equations for shear stress and shear flow in beams?
Shear stress = VQ/It;
Shear flow = VQ/I
[no thickness in shear flow (q)]
200
When working with thin walled pressure vessels, what is r?
Inner radius of the vessel
300
Another name for Modulus of Elasticity.
Young's Modulus
300
What degree of static indeterminacy is this setup? 
1st degree
300
What is the difference between a torsional moment and a bending moment?
A torsional moment occurs around the longitudinal axis, while a bending moment is on the axes in plane with the cross section
300
When looking at a cross section subjected to a bending moment, where is bending moment zero?
At the centroid
300
What are the principal stresses for this element?
-8 ksi, -2 ksi
400
Name the 3 regions that occur in the plastic region, from the yield point to failure.
Yielding, Strain Hardening, Necking
400
A concrete bridge is normally 100 feet long on a nice 70℉ day. How long is the bridge when the temperature is 0℉?
99.958 ft
400
Does increasing the diameter of a shaft increase or decrease the angle of twist under the same torque?
Decreases (bonus: why?)
400
What is the absolute value maximum moment of the beam?
24 kNm
400
If a material has a Modulus of Elasticity of 25000 ksi and a Shear Modulus of Elasticity of 10000 ksi, what is its Poisson Ratio?
0.25
500
Find the modulus of resilience.
0.14772
500
75 MPa
500
A 25mm diameter rod is transmitting 1000W of power at 50 Hz. What is the maximum shear stress in the rod?
1.04 MPa
500
A beam with a 1 inch by 2 inch rectangular cross section nailed to another 1 inch by 2 inch board, making a square 2 inch by 2 inch cross sectioned beam. If the beam is subjected to a maximum shear of V = 100 lbs and each nail can resist a force of 200 lbs, what is the maximum spacing s between the nails, rounded to the nearest half inch?
2.5 in
500
What is the maximum in-plane shear stress for the element and its associated average normal stress? 
shear stress = -56.6 MPa; avg normal stress = 60 MPa