BME 231- EXAM 3 PIL REVIEW QUESTIONS
& ANSWERS RATED 100% CORRECT.
1 of 64
Term
For a hollow cylinder, what is the polar moment of inertia?
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Shear Stress = Shear Stress * J = (pi/2) * (R outer ^4 - R inner
cos(2theta) ^4)
Shear Stress = Shear Stress * Max shear: on the transverse plane
sin(2theta) Max normal: at a 45 degree cut
, Don't know?
2 of 64
Term
What equation relates the polar moment of inertia (J) to
torque?
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T = (G phi J) / L T = (E phi J) / L
(phi * r)/L Shear Stress (tau) = (T*r)/J
Don't know?
3 of 64
Term
What are principal stresses?
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Stresses that describe the Stresses which represent
average stress level. shear forces in a material.
, Stresses which fully
represent the state of Stresses that vary with
stress as normal applied load direction.
stresses.
Don't know?
4 of 64
Term
Equation to relate stress and strain?
Give this one a try later!
Shear Stress = Shear Shear Stress (tau) = G * shear
Stress * sin(2theta) strain (gamma)
Shear Stress = Shear
Stress = E*Strain Stress * cos(2theta)
Don't know?
5 of 64
Term
What does compatibility allow us to do?
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, Form a relationship
between strains using Estimate the torque using the
the PL/EA PL/EA equation for rotation.
equation for
deformation.
Calculate stress using the Determine the shear force using
PL/EA equation for tension. the PL/EA equation for bending.
Don't know?
6 of 64
Term
What are the 2 methods to visualize torsion?
Give this one a try later!
Normalize force to an area 1) Strain at fracture
over which it is applied. 2)% reduction in area
Shear Stress (tau) = G * shear 1) Deflection of axial line
strain (gamma) 2)Angle of twist
Don't know?
& ANSWERS RATED 100% CORRECT.
1 of 64
Term
For a hollow cylinder, what is the polar moment of inertia?
Give this one a try later!
Shear Stress = Shear Stress * J = (pi/2) * (R outer ^4 - R inner
cos(2theta) ^4)
Shear Stress = Shear Stress * Max shear: on the transverse plane
sin(2theta) Max normal: at a 45 degree cut
, Don't know?
2 of 64
Term
What equation relates the polar moment of inertia (J) to
torque?
Give this one a try later!
T = (G phi J) / L T = (E phi J) / L
(phi * r)/L Shear Stress (tau) = (T*r)/J
Don't know?
3 of 64
Term
What are principal stresses?
Give this one a try later!
Stresses that describe the Stresses which represent
average stress level. shear forces in a material.
, Stresses which fully
represent the state of Stresses that vary with
stress as normal applied load direction.
stresses.
Don't know?
4 of 64
Term
Equation to relate stress and strain?
Give this one a try later!
Shear Stress = Shear Shear Stress (tau) = G * shear
Stress * sin(2theta) strain (gamma)
Shear Stress = Shear
Stress = E*Strain Stress * cos(2theta)
Don't know?
5 of 64
Term
What does compatibility allow us to do?
Give this one a try later!
, Form a relationship
between strains using Estimate the torque using the
the PL/EA PL/EA equation for rotation.
equation for
deformation.
Calculate stress using the Determine the shear force using
PL/EA equation for tension. the PL/EA equation for bending.
Don't know?
6 of 64
Term
What are the 2 methods to visualize torsion?
Give this one a try later!
Normalize force to an area 1) Strain at fracture
over which it is applied. 2)% reduction in area
Shear Stress (tau) = G * shear 1) Deflection of axial line
strain (gamma) 2)Angle of twist
Don't know?
