Hostname: page-component-7479d7b7d-wxhwt Total loading time: 0 Render date: 2024-07-12T07:23:55.911Z Has data issue: false hasContentIssue false

The Dynamic Response of Structural Members. An Improvement in Classical Methodology

Published online by Cambridge University Press:  07 June 2016

W. D. Pilkey*
Affiliation:
Illinois Institute of Technology, Chicago
Get access

Summary

It is shown that considerable improvement is achieved in the most popular classical approach to the vibration of structural members by giving new meaning to the generalised coordinate term in the infinite series expansion of the product of the generalised coordinate and eigenfunction. A transform employing the eigenfunction as a kernel efficiently generates a universal solution that embraces arbitrary loading, time-dependent boundary conditions, and such in-span conditions as supports and changes in cross section, axial load, and elastic foundation modulus. The method is applied to the Timoshenko beam as a representative structural member.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society. 1967

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Sevin, E. Discussion of the solution of dynamic beam problems by means of finite cis-hyperbolic transforms. Shock and Vibration Bulletin, Vol. 35, Part 3 p. 88, 1966.Google Scholar
2. Mindlin, R. D. and Goodman, L. E. Beam vibrations with time-dependent boundary conditions. Journal of Applied Mechanics, Vol. 17 p. 377, 1950.Google Scholar
3. Berry, J. G. and Naghdi, P. M. On the vibration of elastic bodies having time-dependent boundary conditions. Quarterly of Applied Mathematics, Vol. 14 p. 43, 1956.Google Scholar
4. Warburton, G. B. The dynamical behaviour of structures. Pergamon, London, 1964.Google Scholar
5. Chow, T. S. On the solution of certain differential equations by characteristic function expansions. Quarterly of Applied Mathematics, Vol. 16 p. 227, 1958.Google Scholar
6. Ojalvo, I. U. An extension of “separation-of-variables” for time-dependent excitations. Quarterly of Applied Mathematics, Vol. 20 p. 390, 1962.Google Scholar
7. Herrmann, G. Forced motions of Timoshenko beams. Journal of Applied Mechanics, Vol. 22 p. 53, 1955.Google Scholar
8. Pestel, E. and Leckie, F. Matrix methods in elastomechanics. McGraw-Hill, New York, 1963.Google Scholar
9. Goldberg, J. E., Bogdanoff, J. L. and Glauz, W. D. General computer analysis of beams. Proceedings of the American Society of Civil Engineers, Vol. 90, EM3 p. 135, 1964.Google Scholar
10. Kalnins, A. Free vibrations of rotationally symmetric shells. Journal of the Acoustical Society of America, Vol. 36 p. 1355, 1964.Google Scholar
11. Eringen, A. C. The finite Sturm-Liouville transform. Quarterly Journal of Mathematics, Oxford, Vol. 2 p. 120, 1954.Google Scholar
12. Cinelli, G. The solution of dynamic beam problems by means of finite cis-hyperbolic transforms. Shock and Vibration Bulletin, Vol. 35, Part 3 p. 81, 1966.Google Scholar
13. Solecki, R. General solution for a thin orthotropic rectangular plate. Bulletin de L’Académie Polonaise des Sciences, Vol. 8 p. 399, 1960.Google Scholar
14. Churchill, R. V. Operational mathematics. McGraw-Hill, New York, 1958.Google Scholar