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Mesh variational r-adaptivity for sharp modeling of brittle fracture

Dony G, Moës N, Remacle J.
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A Variational Principle for Scattering

Physical Review, 1952
A variational principle is presented for the phase shifts ${\ensuremath{\delta}}_{l}$ of a central force scattering problem. This generalizes the principles of Schwinger and Hulth\`en for $S$-state scattering in that (a) it is applicable to states of higher angular momentum, and (b) it depends explicitly on the "inside" wave function only.
Feshbach, Herman, Rubinow, S. I.
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A variational principle in optics

Journal of the Optical Society of America A, 2004
We derive a new variational principle in optics. We first formulate the principle for paraxial waves and then generalize it to arbitrary waves. The new principle, unlike the Fermat principle, concerns both the phase and the intensity of the wave. In particular, the principle provides a method for finding the ray mapping between two surfaces in space ...
Jacob, Rubinstein, Gershon, Wolansky
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On the Generality of Variational Principles

Milan Journal of Mathematics, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Variational principles in elastostatics

Meccanica, 1967
In a previous paper three new variational principles of elastostatics in the theory of small displacements were added to the four principles previously known: that of the minimum potential energy, of Menabrea-Finzi, of Reissner and of Hu-Washizu. This paper presents another new principle plus a variant of Reissner's principle and of its dual and ...
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