Machine Component Design I

(INME 4011)

Outcomes

Upon the completion of the course the student should be able to:

• Calculate the principal stresses and strains in a loaded component
• Identify the location of the critical point on a machine component and calculate the stresses and strains at that point.
• Apply the basic the basic static failure theories in the design of machine components under static loading.
• Apply the basic fatigue failure theories in the design of machine components subjected to fluctuating loading.

Chapter 1 : Introduction. Fundamentals of the Design Process. Steps in the design process.

Chapter 2A - Chapter 2B - Chapter 2C : Review. Equilibrium concept. Transformation equations for plane stress. Principal stresses. Maximum shear stresses. Mohr circle. Construction of the Mohr circle. Principal stresses and maximum shear stresses. Stresses on inclined sections. Stresses in 2-D and 3-D. Stress Tensor.

Chapter 3A - Chapter 3B : Review. Hooke's law for plane stress. Volume change. Strain energy density in plane stress. Hooke's law for triaxial stress. Plane strain. Transformation equations for plane strain. Principal strains. Maximum shear strain. Mohr circle for plane strain. Applied Elasticity. Deflections by Strain Energy of Bending, by Castigliano's Theorem. Deflections produced by Impact.

Chapter 4A - Chapter 4B : Materials properties. Ductile and Brittle Materials. Classification of Solids. Stress-Strain Diagrams. Databases. Effects of Manufacturing.

Chapter 5A - Chapter 5B : Stress concentration. Introduction to Fracture Mechanics. Static Failure Theories. Maximum Shear Stress Theory. Distortion Energy Theory.

Chapter 6A - Chapter 6B : Variable loading. Components designed for fatigue and impact. Dynamic Failure Theories. Endurance limit. Wohler Diagrams.

Chapter 7A - Chapter 7B : Surface Failure. Definition of Tribology. Friction and wear.