Machine Design 2 – Theory notes

In these theory notes all the topics of Machine Design 2 course are treated. In particular it’s possible to find:

Structural Analysis

Statically undetermined systems: Force Method
Evaluation of the Notch effect
Theory of elasticity applied to axisymmetric problems: Thin and Thick Cylinders loaded by internal and external pressure and centrifugal loads.
Finite element modelling: basic formulation, definition of stiffness matrix, main shape functions, selection of element types, load and boundary conditions

Strength of materials and assessment criteria

3D state of stress, multiaxial failure theories
Cyclic response of materials: High Cycle Fatigue. Endurance limit, Fatigue strength, Modifying factors, Stress Concentration and Notch Sensitivity, Multiaxial Fatigue, Variable Amplitude loading, Cumulative Fatigue damage
Linear Elastic Fracture Mechanics: energy approach (Griffith), Stress Intensity Factor, KIC, Fatigue Crack Propagation

Design of Machine Elements

Design of welded joints and evaluation of stresses.