Elements and Performance Criteria
- Apply principle of statics to determine forces in structures, connections, support systems, and trusses in two and three dimensions
- Calculate friction torque in plate and cone clutches
- Laws of friction are applied to develop formulae, using uniform wear, to find the torque in a plate and cone clutch
- Laws of friction are applied to develop formulae, using uniform pressure, to find the torque in plate and cone clutches
- Power to overcome friction in plate and cone clutches using uniform wear and uniform pressure formulae is computed
- Calculate displacement, velocity and acceleration in cams, engine mechanisms and gear systems
- Analyse forces and couples to balance reciprocating machinery
- How primary force balance is obtained is graphically illustrated
- Relationship between complete balance and dynamic balance is explained
- Reciprocating piston acceleration formula is applied to differentiate between primary and secondary forces
- Complete balance for a multicylinder reciprocating engine or machine is illustrated graphically using vector diagrams and computed analytically
- Apply simple harmonic motion principles to solve problems in free and forced vibration
- Differences in the terms amplitude, frequency and period are explained
- Simple harmonic motion (SHM) equations are derived from the scotch yoke mechanism
- Equations for displacement, velocity, acceleration and frequency in SHM are developed
- Displacement, velocity, acceleration and frequency in SHM in a vibrating spring-mass system are determined
- Spring constant (k) for springs in series and parallel is calculated
- Forced vibration caused by an out-of-balance rotating mass is analysed to derive an expression for amplitude of forced vibration
- Dangers of resonance are explained
- Calculate hoop stresses in rotating rings and stresses in compound bars
- Apply strain energy and resilience theory to determine stresses caused by impact or suddenly applied loads
- Calculate beam deflection
- Apply Euler's formula to find buckling load of a column
- Calculate stresses
- How to combine stress formula and calculate stress with combined loading is explained
- Superposition is used to describe stress due to combined axial and bending stress
- Mohr’s Circle is employed to illustrate normal and shear stress
- Principal stress formulae are applied to explain how maximum combined normal and shear stress can be obtained
- Apply thick shell formulae
- Apply continuity equation to determine changes in fluid velocity
- Conservation of energy theory is applied to calculate pressure, head and velocity of fluids flowing through orifices
- Volumetric and mass flow through a venturi meter is calculated
- Forces exerted by flowing fluids either free (jet) or contained are determined, including coefficients of velocity, contraction of area and discharge
- Determine changes in fluid flows through pipe systems and centrifugal pumps
- Difference between steady and unsteady flow is clarified
- Viscosity of fluids is analysed and difference between dynamic and kinematic viscosity is explained
- Significance of Reynolds number in fluid mechanics is explained
- Importance of critical Reynolds number is explained
- Flow losses in pipes and fittings are calculated
- Changes of velocity of liquids in a centrifugal pump are analysed and entry and exit vane angles are determined