Symmetric equilibria for a beam with a nonlinear elastic foundation.
Maria do Rosário Grossinho, Tengteng Ma · Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) · 1994
We study the existence of symmetric solutions of a nonlinear fourth order O.D.E. with nonlinear boundary conditions arising in the theory of elastic beams. Variational methods are used, namely, duality, minimization and mountain pass.