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Titel:

Approximation of derivatives in semi-analytical structural optimization

Dokumenttyp:
Zeitschriftenaufsatz
Autor(en):
K.-U. Bletzinger; M. Firl; F. Daoud
Abstract:
This paper presents a straightforward and generally applicable method for detection and elimination of errors in semi-analytical design sensitivities for any kind of FE-formulation. The basic property of the semi-analytical approach is that derivatives of the stiffness matrix and the load vector are approximated by finite differences. Obviously, truncation errors occur by this method which depend on the chosen step size and the kinematic assumptions of the mechanical model. The accuracy problems...     »
Stichworte:
Solids
Kongresstitel:
ce:title>Structural Optimization
Zeitschriftentitel:
Computers & Structures
Jahr:
2008
Band / Volume:
86
Heft / Issue:
13–14
Seitenangaben Beitrag:
1404 - 1416
Reviewed:
ja
Sprache:
en
Volltext / DOI:
doi:10.1016/j.compstruc.2007.04.014
Format:
Text
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