Book contents
- Frontmatter
- Contents
- Preface
- Notation
- 1 Formulation of the equations of motion
- 2 Element energy functions
- 3 Introduction to the finite element displacement method
- 4 In-plane vibration of plates
- 5 Vibration of solids
- 6 Flexural vibration of plates
- 7 Vibration of stiffened plates and folded plate structures
- 8 Analysis of free vibration
- 9 Forced response I
- 10 Forced response II
- 11 Computer analysis techniques
- Appendix
- Answers to problems
- Bibliography
- References
- Index
11 - Computer analysis techniques
Published online by Cambridge University Press: 13 January 2010
- Frontmatter
- Contents
- Preface
- Notation
- 1 Formulation of the equations of motion
- 2 Element energy functions
- 3 Introduction to the finite element displacement method
- 4 In-plane vibration of plates
- 5 Vibration of solids
- 6 Flexural vibration of plates
- 7 Vibration of stiffened plates and folded plate structures
- 8 Analysis of free vibration
- 9 Forced response I
- 10 Forced response II
- 11 Computer analysis techniques
- Appendix
- Answers to problems
- Bibliography
- References
- Index
Summary
A new user of finite element analysis is unlikely to start writing a computer program. The reason for this is that there is a large number of general purpose finite element programs which can be obtained commercially. All are available on a wide range of mainframe and mini computers. There is also an increasing number available for running on personal computers. These tend to be a subset of the mainframe version. They can be used to analyse small scale structures and also prepare the input data for large scale structures which are to be analysed on a mainframe.
This chapter assumes that the reader intends to use one of these commercial programs. Details of programming aspects can be found in references [11.1–11.6]. Some of the problems at the ends of earlier chapters require the use of a finite element program as indicated. Those readers who do not have such a program available can use the program DLEARN presented in reference [11.7]. DLEARN is an educational, linear static and dynamic finite element analysis program. Although it does not have a free vibration analysis capability, reference [11.7] presents an eigenproblem solution routine, LANSEL, which can be incorporated into DLEARN.
Different programs can give different solutions to the same problem. This is illustrated in Figure 11.1, which shows the variation of the frequency of the first bending mode of a twisted cantilever plate, as a function of the angle of twist.
- Type
- Chapter
- Information
- Introduction to Finite Element Vibration Analysis , pp. 502 - 526Publisher: Cambridge University PressPrint publication year: 1990