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Titel:

APPROXIMATION OF DERIVATIVES IN SEMI-ANALYTICAL STRUCTURAL OPTIMIZATION

Dokumenttyp:
Konferenzbeitrag
Art des Konferenzbeitrags:
Textbeitrag / Aufsatz
Autor(en):
Bletzinger, K.-U.; Firl, M.; Daoud, F.
Abstract:
This paper presents a straightforward and generally applicablemethod fordetection and elimination of errors in semi-analytical design sensitivitiesfor any kind of F.E. formulation. The basic property of the semi-analyticalapproach is that derivatives of the stiffness matrix and the load vectorare approximated by finite differences. Obviously truncation errors occurby this method which depend on the chosen step size and the kinematic assumptionsof the mechanical model. The accuracy problems in th...     »
Stichworte:
Structural Optimization, Exact Semi-Analytical Sensitivity Analysis, FiniteDifference Approximations, Correction Terms, Beams, Plates, Shells, Solids
Kongress- / Buchtitel:
III European Conference on Computational Mechanics Solids, Structures andCoupled Problems in Engineering
Ausrichter der Konferenz:
Lehrstuhl f¨ur Statik, TU München
Jahr:
2006
Reviewed:
ja
Sprache:
de
Erscheinungsform:
Print
Format:
Text
 BibTeX