The Decameron: Structural Analysis

This chapter explains a brief introduction of structural analysis, rotating machinery structures and structural vibration testing. This chapter also includes problem statement of the project as well as objectives and its work scope. 1.2 Background of Study In an essay of “Structural Analysis of Narrative” by Tzvetan Todorov (1996) [1], he tries to explain and elaborate the structural approach to analysing literature by looking at Boccaccio’s The Decameron as well of some other structural issues such as concrete problems of narrative and plot. He starts with differentiating two distinct approaches to literature that are theoretical approach and descriptive approach in order to arrive at what structural analysis intend to do. Todorov added

Through many years of use, a faster and better performance of rotating machines with lower vibration levels were seek to help and improve everyday life. Therefore, in order to attain these design criteria, it is required to analysed, model and improved the dynamic of rotating structures. Figure 1.1: Motors is one of the rotating machinery that has been installed in many appliances The mechanics of rotating machinery vibration is an interesting fields to study further, with considerable technical depth and breadth, utilizing first principles of all the mechanical engineering fundamental areas, solid mechanics, dynamics, fluid mechanics, heat transfer and controls. Many industries rely heavily on reliable trouble-free operation of rotating machinery. These industries include power generation, petrochemical processes, manufacturing, land, sea and air transportation, heating and air conditioning, aerospace propulsion, computer disk drives, textiles, home appliances and a wide variety of military

Therefore the problem presented here in this project is it is difficult to verify the structural models of rotating machinery acquire by rotating modal analysis methods using test data. This is because of practical difficulties that are exist to the implementation of modal tests on these systems. These limitation will now be explained in more detail. Conventional modal analysis and testing methods are based on the principles of reciprocity, which apply to non-rotary, structures and linear in general. Since the principles of reciprocity cannot be used for rotating machinery structures, conventional modal analysis and testing methods cannot be applied to them without modification. With respect to modal characterisation methods, one of the main factors that need to be taken into account is that the models that describe the dynamic behaviour of rotating machinery structures require the definition of more parameters than for the case of non-rotating structures. This is because the asymmetric damping and stiffness matrices of rotating machinery structures involve more parameters than do the corresponding symmetric matrices of