Abstract:
When a system of nonlinear algebraic or transcendental equations with several parameters is solved numerically, the best parameters within the framework of the continuation method have to be sought in the tangent space of the solution set of this system. More specifically, these parameters have to be sought in the directions of the eigenvectors of a linear self-adjoint transformation. Algorithms for the best parametrization of curves and surfaces are proposed. Numerical examples of parametric interpolation of surfaces confirm previously known theoretical results.
Key words:
parametric system of nonlinear equations, best parameters, splines, parametrization of curves, parametrization of surfaces.
Citation:
E. B. Kuznetsov, “Continuation of solutions in multiparameter approximation of curves and surfaces”, Zh. Vychisl. Mat. Mat. Fiz., 52:8 (2012), 1457–1471; Comput. Math. Math. Phys., 52:8 (2012), 1149–1162
This publication is cited in the following 9 articles:
Karpov V.V., Semenov A.A., “Structural Anisotropy Method For Shells With Orthogonal Stiffeners”, Structures, 34 (2021), 3206–3221
Karpov V.V., Semenov A.A., “Refined Model of Stiffened Shells”, Int. J. Solids Struct., 199 (2020), 43–56
Yu. V. Klochkov, A. P. Nikolaev, T. R. Ishchanov, “Allowance for transverse shear deformations in the finite element calculation of a thin elliptic cylinder shell”, J. Mach. Manuf. Reliab., 47:4 (2018), 349–355
V. V. Karpov, “Models of the shells having ribs, reinforcement plates and cutouts”, Int. J. Solids Struct., 146 (2018), 117–135
V. V. Karpov, A. A. Semenov, “Mathematical models and algorithms for studying the strength and stability of shell structures”, J. Appl. Industr. Math., 11:1 (2017), 70–81
S. D. Krasnikov, E. B. Kuznetsov, “Numerical continuation of solution at a singular point of high codimension for systems of nonlinear algebraic or transcendental equations”, Comput. Math. Math. Phys., 56:9 (2016), 1551–1564
A. A. Semenov, “Strength and stability of geometrically nonlinear orthotropic shell structures”, Thin-Walled Struct., 106 (2016), 428–436
V. Karpov, A. Semenov, “Comprehensive study of the strength and stability of shallow shells made of fiberglass”, Mechanics, Resource and Diagnostics of Materials and Structures, MRDMS-2016, Proceedings of the 10th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures (Ekaterinburg, Russia, 16?20 May 2016), AIP Conf. Proc., 1785, eds. E. Gorkunov, V. Panin, S. Ramasubbu, Amer. Inst. Phys., 2016, UNSP 040022
S. D. Krasnikov, E. B. Kuznetsov, “Numerical continuation of solution at singular points of codimension one”, Comput. Math. Math. Phys., 55:11 (2015), 1802–1822