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Dokumenttyp:
Zeitschriftenaufsatz 
Autor(en):
K.-U. Bletzinger; M. Firl; F. Daoud 
Titel:
Approximation of derivatives in semi-analytical structural optimization 
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 
Format:
Text