That work addresses the problem of finding the optimal thickness distribution for a rectangular isotropic plate of given plan dimensions (length and width) that would maximize its uniaxial buckling load, loosely referred to as shape optimization. The component is a rear suspension torque arm, used to prevent windup in live axles. This problem is idealized as fixed around the large hole and loaded at the small hole. The part is 0.3 cm thick and assumed to be stamped from sheet metal. For this study, the stresses are assumed to be limited to 80000 N/cm2. A parametric modeling approach is used to define the complete problem, which includes fully automatic mesh generation to create the finite element mesh. A commercial finite element program was used for analysis and sensitivities. A conservative approximate problem formulation is used for optimization in which the approximate problem is solved using the modified method or feasible directions.
Shape optimization with buckling and stress constraints
Gestaltoptimierung unter Beulungs- und Spannungs-Zwangsbedingungen
AIAA Journal ; 34 , 2 ; 423-425
1996
3 Seiten, 6 Bilder, 7 Quellen
Article (Journal)
English
Formgebung , Optimierung , Stanzen , Fahrzeugfederung , Hinterachse , Ausbeulung , mechanische Spannung , Entwurf , Auslegung (Dimension) , Dicke , Platte (Bauteil) , Isotropie , Blech , Gewichtsverminderung , Variable , Durchbiegung , Finite-Elemente-Methode , Maschennetz , Bremse , Eigenwert , Konvergenz , Zielfunktion , Bremsträger
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