Variational Methods

  • Julian L. Davis


This chapter is a modification and extension, of some of the material in [15, Chap. 9], to our specific needs. The emphasis will be on the Lagrange and Hamilton canonical equations of motion, with applications to wave propagation in electromagnetic media. For the convenience of the reader, some of the essential features of the calculus of variations, as well as D’Alembert’s principle, Hamilton’s principle and other variational principles, will be reviewed in the context of phase space. This is the setting for a proper understanding of the Hamilton—Jacobi theory which gives us a deep insight into the partial differential equations (PDEs) of wave propagation. For a more thorough treatment, the reader is referred to the above reference, and to the standard works on the calculus of variations such as [5], for a more refined mathematical treatment of this subject which involves existence theorems, and so forth.


Configuration Space Virtual Work Virtual Displacement Holonomic Constraint Nonconservative Force 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag New York, Inc. 1990

Authors and Affiliations

  • Julian L. Davis
    • 1
  1. 1.Pompton PlainsUSA

Personalised recommendations