Further Mechanical Principles (L3)


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Further Mechanical Principles and Applications

Aim and purpose


This unit gives learners the opportunity to extend their knowledge of mechanical principles and to apply them in the solution of engineering problems.


Unit Introduction


All machines and mechanisms consist of interconnected parts working together to produce a desired output. Engineers involved in the design, testing and servicing of mechanical systems need to have a firm grasp of the underpinning principles in order to appreciate the choice of components, the forces acting on them and the way that they relate to each other.


The study of stationary structures and their components is often referred to as ‘statics’. The first two learning outcomes cover the mechanical principles that underpin the design of framed structures, simply supported beams and structural components. The aim is to give learners the means to evaluate the integrity and safety of engineering structures and to lay the foundation for structural analysis at a higher level.


A great many engineering systems are designed to transmit motion and power. These include machine tools, motor vehicles, aircraft and a range of domestic appliances. The study of the motion in mechanical systems is known as ‘kinematics’ and the study of the forces at work and the power they transmit is known as ‘dynamics’. Learning outcomes 3 and 4 aim to extend learners’ knowledge of the mechanical principles associated with these studies. Learning outcome 3 aims to provide a basic knowledge of rotational motion and the effects of centripetal force in simple rotating systems. In learning outcome 4 learners are introduced to simple machines used as lifting devices. An understanding of the mechanical principles involved in the operation of these devices and mechanisms will provide a foundation for the analysis of more complex power transmission systems at a higher level of study.


Learning outcomes


On completion of this unit a learner should:

  1. Be able to determine the forces acting in pin-jointed framed structures and simply supported beams
  2. Be able to determine the stress in structural members and joints
  3. Be able to determine the characteristics of rotating systems
  4. Be able to determine the operating characteristics of simple lifting machines.