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Naslov:Shape optimization of truss-stiffened shell structures with variable thickness
Avtorji:Kegl, Marko (Avtor)
Brank, Boštjan (Avtor)
Datoteke:URL http://dx.doi.org/10.1016/j.cma.2005.05.020
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano ()
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Opis:This paper presents an effective approach to shape optimal design of statically loaded elastic shell-like structures. The shape parametrization is based on a design element technique. The chosen design element is a rational Bézier body, enhanced with a smoothly varying scalar field. A body-like designelement makes possible to unify the shape optimization of both pure shells and truss-stiffened shell structures. The scalar field of the design element is obtained by attaching to each control point a scalar quantity, which is an add-on to the position and weight of the control point. This scalar field is linked to the shell thickness distribution, which can be optimized simultaneously with the shape of the shell. For linear and non-linear analysis of shell structures, a reliable 4-node shell finite element formulation is utilized. The presented optimization approach assumes the employment of a gradient-based optimization algorithm and the use of the discrete method of direct differentiation to perform the sensitivity analysis.Four numerical examples of shell and truss-stiffened shell optimization are presented in detail to illustrate the performance of the proposed approach.
Ključne besede:mechanics of structures, shape optimization, shells, trusses, Bézier body, numerical methods, optimum design
Leto izida:2006
UDK:624.074.43:519.61/.64
COBISS_ID:10296342 Povezava se odpre v novem oknu
ISSN pri članku:0045-7825
NUK URN:URN:SI:UM:DK:6TCNFPA6
Število ogledov:1072
Število prenosov:62
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Ostalo
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Gradivo je del revije

Naslov:Computer Methods in Applied Mechanics and Engineering
Skrajšan naslov:Comput. methods appl. mech. eng.
Založnik:North-Holland
ISSN:0045-7825
COBISS.SI-ID:6695685 Novo okno

Sekundarni jezik

Jezik:Angleški jezik
Ključne besede:mehanika konstrukcij, optimiranje oblike, lupine, paličje, Bézierjevo telo, numerične metode, optimalno projektiranje


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