Open AccessStructural analysis of assemblies using non-conformal spectral element method
Author(s) -
А. В. Вершинин,
В.А. Левин,
A. V. Kukushkin,
Dmitry A. Konovalov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/747/1/012033
Subject(s) - discretization , conformal map , polygon mesh , computer science , robustness (evolution) , finite element method , correctness , numerical analysis , algorithm , mathematics , computational science , geometry , mathematical analysis , structural engineering , engineering , biochemistry , chemistry , gene
An approach to the numerical simulation of a contact interaction between the deformable solids inside the assembly is considered in the article. A standard approach for solving such kind of problems is to imprint the boundaries and merge the solids along the common boundary zones. However this approach requires conformal discretization of the whole assembly including conformal meshes on the common boundary regions during the numerical simulation, which often causes significant problems for the industrial assemblies consisting of a large number of parts of different sizes. Test examples are considered for the verification of the developed in CAE Fidesys (www.cae-fidesys.com) algorithm of tying elastic solids by comparing simulation results with the solutions of similar problems for the case of merged solids with a conformal mesh discretization: static and modal analysis of the assemblies consisting of cubic, cylindrical and spherical bodies. A robustness of the algorithm and a continuity of the obtained solution are analyzed in case of gaps/overlaps between contacting solids. It is shown that small gaps and overlaps in CAD-model of an assembly do not influence much a correctness of numerical results and these cases are correctly and automatically processed in CAE Fidesys software module based on the described algorithm.