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| Titel: |
OPTIMAL DESIGN OF MULTISPAN CONTINUOUS CABLES WITH GENERAL SUPPORT CONDITIONS |
| Auteur: |
Goh, C. J. Wang, C. M. Teo, K. L. |
| Verschenen in: |
Engineering optimization |
| Paginering: | Jaargang 12 (1987) nr. 4 pagina's 299-314 |
| Jaar: |
1987-10-01 |
| Inhoud: |
This paper is concerned with the least weight design of multispan continuous cables whose support positions may be prescribed or are free to be chosen optimally. The intermediate supporting points are either of a roller or a pulley-type. When all the supports are specified at the same level, the problem becomes quite simple. This is because the maximum cable tension (which governs the cross-sectional area of the cable) and the cable length can be expressed in terms of the horizontal cable force; resulting in a single parameter optimization problem. However, the problem becomes more challenging when the support positions are unspecified or prescribed at different levels since (a) more parameters are introduced and (b) the location of the maximum cable tension is not known a priori. The difficulty (b) can be overcome by treating the maximum tension as an additional independent parameter and imposing the necessary inequality constraints. This converts the problem into an equivalent standard constrained optimization problem which may then be solved using any one of the existing nonlinear programming methods. Interestingly, further analytical investigations indicate that, depending on the support conditions, some of the constrained optimization problems can be reduced to standard unconstrained ones. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 147 van 219 gevonden artikelen
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