# Shared Flashcard Set

## Details

Design of Weldments
List of Symbols and Definitions
58
Engineering
08/30/2011

Term
 α
Definition
 angular acceleration (radians/sec/sec); included angle of beam curvature (degrees); form factor
Term
 Δ
Definition
 perpendicular deflection (in.), bending (Δb) or shear (Δs)
Term
 ε
Definition
 unit strain, elongation or contraction (in./in.)
Term
 εs
Definition
 unit shear strain (in./in.)
Term
 ν
Definition
 Poisson's ratio (steel = .3 usually)
Term
 ω
Definition
 leg size of fillet weld (in.); rate of angular motion about an axis (radians/sec)
Term
 φ
Definition
Term
 Σ
Definition
 sum
Term
 σ
Definition
 normal stress, tensile or compressive (psi); strength (psi)
Term
 τ
Definition
 shear stress (psi); shear strength (psi)
Term
 θ
Definition
Term
 a
Definition
 area of section beyond plane where stress is desired or appplied (in.2); length of plate (in.); acceleration or deceleration (ft/min, ft/sec)
Term
 b
Definition
 width of section (in.); distance of area's center of gravity to referance axis (in.)
Term
 c
Definition
 distance from neutral axis to extreme fiber (in.)
Term
 d
Definition
 depth of section (in.); moment arm of force (in.); distance (in.)
Term
 e
Definition
 eccentrictiy of applied load (in.); total axial strain (in.); moment oarm of force (in.); effective width (in.)
Term
 f
Definition
 force per linear inch of weld (lbs/in.); horizontal shear force (lbs/in.); (vectorial) resultant force (lbs/in.):  allowable strength of weld (lbs/in.)
Term
 g
Definition
 acceleration of gravity (386.4"/ sec2)
Term
 h
Definition
 height; height of fall
Term
 k
Definition
 any specified constant or amplification factor
Term
 m
Definition
 mass
Term
 n
Definition
 distance of section's neutral axis from reference axis (in.); number of units in series
Term
 p
Definition
 internal pressure (psi)
Term
 r
Definition
Term
 s
Definition
 length of curved beam segment (in.)
Term
 t
Definition
 thickness of section (in.); time (min.); time interval (sec)
Term
 u
Definition
 material's tensile modulus of resilience (in.-lb/in.3)
Term
 uu
Definition
 material's ultimate energy resistance (in.-lb/in.3)
Term
 w
Definition
Term
 x
Definition
 length of moment arm (curved beams)
Term
 y
Definition
 distance of area's center of gravity to neutral axis of entire section (in.)
Term
 A
Definition
 area (in.2); total area of cross-section
Term
 E
Definition
 modulus of elasticity, tension (psi)
Term
 Es
Definition
 modulus of elasticity in shear (psi)
Term
 Et
Definition
 tangential modulus of elasticity (psi)
Term
 Ek
Definition
 kinetic energy
Term
 Ep
Definition
 potential energy
Term
 F
Definition
 total force (lbs); radial force (lbs)
Term
 I
Definition
 moment of inertia (in.4)
Term
 J
Definition
 polar moment of inertia (in.4)
Term
 K
Definition
 ratio of minimum to maximum load (fatigue); any specified constant
Term
 L
Definition
 length of member (in. or ft.); span between supports (in.)
Term
 Le
Definition
 effective length of column
Term
 M
Definition
 bending moment (in.-lbs)
Term
 Mo
Definition
 applied bending moment (in.-lbs)
Term
 N
Definition
 number of service cycles
Term
 P
Definition
Term
 Q
Definition
 shear center
Term
 R
Definition
 reaction (lbs); torsional resistance of member (in.4)
Term
 S
Definition
 section modulus (in.3) = I/c
Term
 T
Definition
 torque or twisting moment (in.-lbs)
Term
 U
Definition
 stored energy
Term
 V
Definition
 vertical shear load (lbs); shear reaction; velocity; volume
Term
 W
Definition
 total load (lbs); weight (lbs); total width (in.)
Term
 C.G.
Definition
 center of gravity
Term
 HP
Definition
 horsepower
Term
 N.A.
Definition
 neutral axis
Term
 RPM
Definition
 revolutions per minute
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