Stress, strain, Hooke law, torsion, beam bending, shear and moment diagrams, Mohr circle, buckling and failure theories.
45 cards · basic cards · AI-written, checked twice. Edit anything.
- What is normal stress?
Show answer
Force per unit area perpendicular to the surface (P/A)- What are the common units for stress?
Show answer
Pascals (Pa), psi (pounds per square inch), or MPa- What is shear stress?
Show answer
Force per unit area parallel to the surface (V/A)- What does a stress-strain diagram show?
Show answer
The relationship between applied stress and the resulting material deformation- How does true stress differ from engineering stress?
Show answer
True stress uses actual instantaneous area; engineering stress uses original area- What is engineering strain?
Show answer
Change in length divided by original length (delta L / L0)- What is shear strain?
Show answer
The angular distortion or change in angle between initially perpendicular lines- What are the units for strain?
Show answer
Dimensionless (it is a ratio); sometimes expressed as a percentage- Define Poisson's ratio.
Show answer
The negative ratio of lateral strain to axial strain; typically between 0 and 0.5 for metals- What is volumetric strain?
Show answer
Change in volume divided by original volume; related to normal strains in three directions- State Hooke's Law for normal stress-strain.
Show answer
Stress equals modulus of elasticity times strain: sigma = E * epsilon- What is the modulus of elasticity (Young's modulus)?
Show answer
The slope of the linear portion of the stress-strain curve; measures material stiffness- Within what range is Hooke's Law valid?
Show answer
Within the elastic (linear) region of the stress-strain diagram up to the proportional limit- State Hooke's Law for shear stress-strain.
Show answer
Shear stress equals shear modulus times shear strain: tau = G * gamma- What is the shear modulus (modulus of rigidity)?
Show answer
The slope of the linear shear stress-strain curve; measures resistance to shear deformation
FlashKeepers