TENSION Flashcards
What are the three most commonly used steel?
A36, A572, A992
Why is A36 considered the most ductile?
Its tensile strength is the biggest
The condition in which steel exhibits a considerable increase in tension strength beyond the
yield point is called _______________.
Strain Hardening
Steel type that is used for secondary members of building trusses and joist
Angle shape
Steel type that are not commonly manufactured
Miscellaneous (MT)
Structural Steel is made out of _____
Alloy - Iron and Carbon
Principal component of alloy (steel)
Iron
How do you convert ksi into MPa?
multiply with 6.9MPa
Ultimate Tensile Strength (Fu) of A36
248 MPa
Yield Stress (Fy) of A36
400 MPa
How does hot rolled steel differ from cold formed steel?
Cold formed steel:
- Thinner
- Used for smaller structure like residential
- Strength is relatively smaller
The values of Fy and Fu may be obtained from a _____ in tension
Coupon Test
Ratio of the transverse strain to the longitudinal strain
Poisson’s Ratio
Ability of the material to undergo large inelastic deformation without failure
Ductility
Part of steel where elongation can be determined during tensile test.
Gage Length
Modulus of elasticity of steel
Esteel = 200, 000 MPa
Law that states “stress is directly proportional to strain”
Hooke’s Law
Energy absorbed by the material per unit volume up to rupture.
Modulus of Toughness
Energy absorbed by the material per unit volume up to yield point.
Modulus of Resilience
Maximum stress that the materials achieve in tension test.
Ultimate Tensile Strength (Fu)
Ratio of the shearing stress to shearing strain during elastic behaviour.
Shear Modulus (G) or Modulus of Rigidity
Commonly used failure theory
Von Mises Yield Criterion
For serviceability limits, the limiting L/r for tension members is ____, to prevent vibration and sagging.
300
Allowance for bolt insertion
1/16 inch (1.6 mm) greater than the design bolt diameter
