Ch. 6 Mechanical properties Flashcards
1
Q
Types of deformation
A
Elastic & Plastic
2
Q
Strain Formula
A
Strain = deltal / l0
3
Q
Torsion Stress Formula
A
Strain = F/As = M(turning moment)/ AcR
4
Q
Types of Compression
A
Linear, Bi-Axial, Hydrostatic
5
Q
Strength
A
Load it can take (Fishing line)
6
Q
Engineering Stress Formula
A
Force/Min Cross Section Area
7
Q
True Stress Formula
A
True Stress = Force/Instantaneous Cross Section Area
8
Q
A
9
Q
Lateral Strain Formula
A
R = delta x / y = tan theta
10
Q
Hookes Law (elastic deformation)
A
Stress = E * Strain
11
Q
A
12
Q
If U > 0.5
A
Density Increases
13
Q
If Y < 0.5
A
Density Decreases
14
Q
Elastic Shear
A
Shear Stress = Shear Modulus * Shear Strain
15
Q
E, G, U formula
A
E = 2G(1 + U)
