Unit 3 Notes Flashcards
1
Q
Three principal types of internal force
A
Tensile
Compressive
Shear
2
Q
Tensile Force
A
Pulling
3
Q
Compressive
A
Squeezing
4
Q
Shear
A
Sideways (pushing)
5
Q
Direction of normal or axial stress
A
perpendicular to analysis plance
6
Q
Direction of Shear Stress
A
parallel to analysis plane
7
Q
Types of complex load
A
Bending and Torsion
8
Q
Describe bending
A
one side experiences compression
one side experiences tension
9
Q
Common bending injury
A
femoral neck fracture in elderly
10
Q
Describe torsion
A
one end rotates clockwise
one end rotates counterclockwise
11
Q
Symbol for Stress
A
𝞼
12
Q
Unit of stress
A
N/m2 (pascal)
13
Q
What does stress cause
A
deformation
14
Q
what is deformation
A
change in shape
15
Q
What is strain
A
a measure of deformation
a change in length