ENES 220 Mechanics of Materials
Welcome
ENES 220 Mechanics of Materials 3 credits
Distortion of engineering materials in relation to changes in stress or temperature.
Geometry of internal strain and external displacement. Elementary applications of
beams, columns, shafts, tanks trusses and connections. PREREQUISITE: ENES 102, MATH
182 with grades of C or better.
Three hours lecture each week.
Course Outcomes
Upon course completion, a student will be able to:
- Define basic concepts of stress, strain and their relations based on linear elasticity
- Analyze material behaviors due to different types of loading.
- Calculate stresses and deformations of a bar due to an axial loading under uniform and non-uniform condition.
- Compute stresses and deformation of a torsional bar
- Draw shear-moment diagram of a beam and find the maximum/shear and their locations
- Calculate normal and shear stresses on any cross-section of a beam.
- Construct and apply Mohr’s circle to find the principal stresses, maximum shear, corresponded angles and stresses in any inclined plane.
- Define stresses on a structure under combined loading.
- Solve the deflection of a beam under combined loads by using method of moment-area and superpositions.
- Explain stability and buckling phenomena for a slender member under an axial compressive force.
Course Schedule
ENES220 Course Schedule
ENES 220 Mechanics of Materials
(reference only, schedule is subjected to change)
| WK | Topics | Sections in Book | Homework |
|---|---|---|---|
| 1 | Introduction, Statics Review Normal and Shear Stresses |
1:3-4 |
|
| 2 | Stress Application, Strain Strain, Stress-Strain Curve |
1:5-7, 2 2, 3:1-4 |
|
| 3 | 1D Hook's Law and Poisson's Ratio Axially Loaded Member |
3:3-6 3:6-7, 4:1-2 |
|
| 4 | Statically Indetermined Member, Thermal Stress Review |
4:3-6 1-4 |
HW #1 due |
| 5 | TEST 1 Torsional Formula |
5:1-3 |
|
| 6 | Power Transmission Thin-Walled Tube |
5:3-4 5:4-5 |
|
| 7 | Shear-Bending Diagrams Flexure Formula |
6:1-2 6:3-4 |
HW #2 due |
| 8 | Bending Application and Transverse Shear Shear Flow and Applications |
6, 7:1 7:2-3 |
|
| 9 | Review 5-7 TEST 2 |
|
HW #3 due |
| 10 | Plane-Stress Transformation Principal Stresses, Mohr's Circle |
9:1-2 9:3-4 |
|
| 11 | Mohr's Circle - Stress and Strains Combined Stress Applications, Intro to Project |
9:5, 10 8, 11 |
|
| 12 | Review 8-11 TEST 3 |
HW #4 due |
|
| 13 | Deflection of Beams Deflection of Beams 2 12:5-6 |
1 12:1-2 1 12:5-6 |
|
| 14 | Buckling of Columns Review |
13:1-3 | Project due |
| 15 | Final Exam 12:30 | HW #5 due |
