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Optimum cost design of welded box beams with longitudinal stiffeners using advanced backtrack method

Jarmai, K. / Farkas, J.

The use of longitudinal stiffeners in box girders loaded in bending results in savings in weight and cost. To study these savings the optimized box beams without and with stiffeners are compared to each other. The minimum cross-sectional area design can be solved analytically. A cost function is defined containing material and fabrication (welding) costs. This function is nonlinear in the structural dimensions to be optimized, therefore an advanced backtrack method is worked out and applied. An illustrative numerical example shows the savings.

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Optimum cost design of welded box beams with longitudinal stiffeners using advanced backtrack method

Jarmai, K. / Farkas, J.

The use of longitudinal stiffeners in box girders loaded in bending results in savings in weight and cost. To study these savings the optimized box beams without and with stiffeners are compared to each other. The minimum cross-sectional area design can be solved analytically. A cost function is defined containing material and fabrication (welding) costs. This function is nonlinear in the structural dimensions to be optimized, therefore an advanced backtrack method is worked out and applied. An illustrative numerical example shows the savings.

Optimum cost design of welded box beams with longitudinal stiffeners using advanced backtrack method

Jarmai, K. / Farkas, J.

The use of longitudinal stiffeners in box girders loaded in bending results in savings in weight and cost. To study these savings the optimized box beams without and with stiffeners are compared to each other. The minimum cross-sectional area design can be solved analytically. A cost function is defined containing material and fabrication (welding) costs. This function is nonlinear in the structural dimensions to be optimized, therefore an advanced backtrack method is worked out and applied. An illustrative numerical example shows the savings.

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Title:

Optimum cost design of welded box beams with longitudinal stiffeners using advanced backtrack method

Contributors:

Jarmai, K. (author) / Farkas, J. (author)

Published in:

Structural and Multidisciplinary Optimization ; 21 ; 52-59

Publication date:

2001

Size:

8 Seiten, 14 Quellen

ISSN:

DOI:

https://doi.org/10.1007/s001580050167

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Steifigkeit , Biegen , Kosten , Kastenträger , Kostenoptimierung , Biegebeanspruchung , Querschnittsfläche , nichtlineare Funktion

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