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Keywords:
non-linear subsoil of Winkler's type; semi-coercive beam problem; approximation; iterative methods; convergence; projection; load stability
Summary:
A non-linear semi-coercive beam problem is solved in this article. Suitable numerical methods are presented and their uniform convergence properties with respect to the finite element discretization parameter are proved here. The methods are based on the minimization of the total energy functional, where the descent directions of the functional are searched by solving the linear problems with a beam on bilateral elastic ``springs''. The influence of external loads on the convergence properties is also investigated. The effectiveness of the algorithms is illustrated on numerical examples.
References:
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[11] Sysala, S.: Numerical illustration of theoretical results for non-linear semi-coercive beam problem. In: Proceedings of Seminar on Numerical Analysis---SNA'08 TU Liberec (2008), 110-114.
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