Formulae Flashcards
1
Q
eq for shear stress
A
τ = F/A
2
Q
eq for shear rate
A
Ẏ = v/h = dv/dh
3
Q
eq for strain in terms of h
A
dx/h
4
Q
eq for viscosity
A
μ = τ/Ẏ
5
Q
what are the units for toughness?
A
energy per volume
6
Q
units for stiffness?
A
Pa or MPa or GPa
7
Q
units for ultimate tensile strength?
A
Pa or MPa or GPa
8
Q
eq for stress and strain combined
A
σ = Eε
where σ = stress
E = elastic modulus
ε = strain
9
Q
eq for E
A
E = σ/ε
10
Q
units for E
A
N/m^2 or Pa or MPa or GPa
11
Q
eq for strain
A
ε = ΔL / L_0
where ΔL = change in length of sample
L_0 = initial length
12
Q
units for strain
A
NO units or sometimes %
13
Q
eq for stress using force
A
σ = force/A_0
where A_0 = cross-sectional area from sample
14
Q
units for stress
A
N/m^2 or Pa or MPa or GPa
15
Q
conversion for MPa
A
10^6 Pa
