DBPapers
DOI: 10.5593/sgem2017/21/S07.081

STUDY REGARDING THE CONVERGENCE OF THE STRUCTURAL MODELS IN COMPUTER-AIDED DESIGN

V. M. Muraru, P. Cardei, S. L. Muraru, R. Sfiru, C. Muraru-Ionel
Wednesday 13 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7408-01-0 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 21, 633-640 pp, DOI: 10.5593/sgem2017/21/S07.081

ABSTRACT

This paper presents a study of the structural models convergence, rezulted from CAD (Computer Aided Design ), based on method of estimation. The study of the structural models convergence presented a method based on the convergence, in the sense of mathematical analysis, adapted to finite strings. The convergence estimators are status sizes that characterize the response of the structural model to the given load. As convergence estimators can be used sizes that characterize the response of the structure, like follows: relative displacements (translations, rotations), specific strains, equivalent stress (Von Mises), components of the displacement velocity vector, local sizes that characterize cinematic phenomena, components of the acceleration vector, local sizes which characterize dynamic phenomena: the temperature in the body, etc. For the convergence study of a problem, one can use a single mathematical model for a given structural analysis problem. The mathematical model is resolved by numerical or analytical methods, refining the meshing, respectively, increasing the number of the series terms, until it touches the convergence. More models can also be used for a problem. Each model is refines until the results, in terms of the convergence estimators, are close enough.

Keywords: CAD, CAE, FEA, structural model, convergence.

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