# A Nonlinear Beam Equation Arising in the Theory of Elastic Bodies

### Karl Doppel

Freie Universität Berlin, Germany### W. Herfort

Freie Universität Berlin, Germany### K. Pflüger

TU Wien, Austria

## Abstract

We study the global solvability of a nonlinear Cauchy problem, which arises in the theory of oscillations in elastic bodies. We show that the linearized problem defines a contraction semigroup, which is then used to transform the Cauchy problem into an integral equation. Finally, it is shown that the corresponding integral operator has a unique fixed point, which gives rise to a global solution of the original nonlinear problem.

## Cite this article

Karl Doppel, W. Herfort, K. Pflüger, A Nonlinear Beam Equation Arising in the Theory of Elastic Bodies. Z. Anal. Anwend. 16 (1997), no. 4, pp. 945–960

DOI 10.4171/ZAA/798