Formulas Flashcards
1
Q
formula: Direct Stress
A
F = P / A
2
Q
formula: Unit Strain
A
ε = ΔL / Lo
3
Q
symbol: ε
A
unit strain (ΔL / Lo)
4
Q
formula: Modulus of Elasticity
A
E = F / ε
5
Q
symbol: E
A
Modulus of Elasticity (Stress/Strain)
6
Q
formula: Deformation
A
ΔL = P Lo / A E
7
Q
meaning of symbols: (deformation) ΔL = P Lo / A E
A
P= axial load Lo= original length A= cross sectional area E= modulus of elasticity
8
Q
symbol: P
A
axial load
9
Q
formula: Thermal Deformation
A
ΔL = α (ΔT) Lo
10
Q
symbol: α (Thermal Deformation)
A
Coefficient of Thermal Expansion
11
Q
to increase shear of a member
A
increase area
12
Q
the formula for shear is equal to the
A
area
13
Q
geometric indication of deflection
A
Moment of Inertia
14
Q
formula: Moment of Inertia
A
Ixx = bd³/12
15
Q
geometric indication of bending moment
A
Section Modulus
