Geodesic
Unilateral elastic subsoil of Winkler's type: Semi-coercive beam problem
Applications of Mathematics, Tome 53 (2008) no. 4, pp. 347-379.

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The mathematical model of a beam on a unilateral elastic subsoil of Winkler's type and with free ends is considered. Such a problem is non-linear and semi-coercive. The additional assumptions on the beam load ensuring the problem solvability are formulated and the existence, the uniqueness of the solution and the continuous dependence on the data are proved. The cases for which the solutions need not be stable with respect to the small changes of the load are described. The problem is approximated by the finite element method and the relation between the original problem and the family of approximated problems is analyzed. The error estimates are derived in dependence on the smoothness of the solution, the load and the discretization parameter of the partition.
DOI : 10.1007/s10492-008-0030-0
Classification : 49K05, 49K15, 49K27, 49M25, 65D30, 74B20, 74K10, 74M15, 74S05
Keywords: non-linear subsoil of Winkler's type; semi-coercive beam problem; existence; uniqueness; continuous dependence on data; finite element method; numerical quadrature 
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     title = {Unilateral elastic subsoil of {Winkler's} type: {Semi-coercive} beam problem},
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Sysala, Stanislav. Unilateral elastic subsoil of Winkler's type: Semi-coercive beam problem. Applications of Mathematics, Tome 53 (2008) no. 4, pp. 347-379. doi : 10.1007/s10492-008-0030-0. http://geodesic.mathdoc.fr/articles/10.1007/s10492-008-0030-0/

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