Geodesic
An approach to the optimization of thin-walled cantilever open section beams
Theoretical and applied mechanics, Tome 34 (2007) no. 4.

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An approach to the optimization of the thin-walled cantilever open section beams subjected to th bending and to the constrained torsion is considered. The problem is reduced to the determination of minimum mass, i.e. minimum cross-sectional area of structural thin-walled I-beam and channel-section beam elements for given loads, material and geometrical characteristics. The area of the cross-section is assumed to be the objective function. The stress constraints are introduced. Applying the Lagrange multiplier method, the equations, whose solutions represent the optimal values of the ratios of the parts of the chosen cross-section, are formed. The obtained results are used for numerical calculation.
Keywords: optimization, thin-walled beams, optimal dimensions, objective function, stress constraints 
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     author = {Nina Andjeli\'c and Vesna Milo\v{s}evi\'c-Miti\'c},
     title = {An approach to the optimization of thin-walled cantilever open section beams},
     journal = {Theoretical and applied mechanics},
     pages = {323 - 340},
     publisher = {mathdoc},
     volume = {34},
     number = {4},
     year = {2007},
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Nina Andjelić; Vesna Milošević-Mitić. An approach to the optimization of thin-walled cantilever open section beams. Theoretical and applied mechanics, Tome 34 (2007) no. 4. http://geodesic.mathdoc.fr/item/TAM_2007_34_4_a3/