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Document type:
Konferenzbeitrag 
Contribution type:
Textbeitrag / Aufsatz 
Author(s):
Bletzinger, K.-U.; Firl, M.; Daoud, F. 
Title:
APPROXIMATION OF DERIVATIVES IN SEMI-ANALYTICAL STRUCTURAL OPTIMIZATION 
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...    »
 
Keywords:
Structural Optimization, Exact Semi-Analytical Sensitivity Analysis, FiniteDifference Approximations, Correction Terms, Beams, Plates, Shells, Solids 
Book / Congress title:
III European Conference on Computational Mechanics Solids, Structures andCoupled Problems in Engineering 
Organization:
Lehrstuhl f¨ur Statik, TU München 
Year:
2006 
Reviewed:
ja 
Language:
de 
Publication format:
Print 
Format:
Text