User:Eas4200c.f08.radsam/Preface
Preface
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What is involved in Aerospace Structures (AS)?
AS, the analysis of structural composition in airplanes, is governed by Partial Differential Equations (PDEs), which can be solved using the Finite Element Method (FEM). The FEM is used widely in all fields of engineering, applied math, and geologic exploration.
Several concepts will be emphasized in this course. The understanding of mechanics will be an important asset contributing to the success of the student. The ability to formulate equations will be a necessary requirement as well as being able to judge the correctness of a solution (via FEM). In addition to these things, we will try to avoid old ad hoc methods of structural analysis, as newer methods of analysis have been up-and-coming in recent years.
Warning: You need to provide a reference for the "justification" below (book's preface). Eml4500.f08 13:06, 22 September 2008 (UTC)
Error corrected: Eas4200c.f08.radsam.a. 16:00, 23 September 2008 (UTC)
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Several developments in aerospace structures over the years have gained prominent and widespread use throughout the community. The first of which would be the use of commercial finite element codes. This gives credence to the emphasized course concepts listed above. Second, fracture mechanics is one of the most vital tools in the analysis of aircraft structure damage tolerance and durability. Thus, in exposing undergraduate students to this, they'll have already seen such techniques when they come upon them again. Third, advanced composite materials are now widely used in aircraft. As a result, knowledge of traditional materials will not be very useful in these areas and it is in line to get familiar with the various properties of these materials, as well. As a result of these developments, the constant elasticity approach is used, multidimensional relationships are stressed, and displacement (as opposed to stress or strain) is the key in deriving governing equations. Griffth's concept of strain energy release rate will be utilized, as well.[2]
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References
edit- ↑ "DH-60 Gipsy Moth Wing Structure". Retrieved 2008-09-10.
- ↑ Sun, C.T. (2006). Mechanics of Aircraft Structures. Hoboken, NJ: John Wiley & Sons, Inc.. pp. xv-xvi. ISBN 0-471-69966-7.
