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Move limits definition in structural optimization with seque

أهلا و سهلا بكافّة الإخوة الأعضاء و الزوّآر في منتديات تونيزيا سات .... Move limits definition in structural optimization with sequential linear programming Part I: Optimization algorithm Abstract A

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قديم 08-06-2012, 04:07 PM
الصورة الرمزية رشاء احمد
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تاريخ التسجيل: Mar 2010
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موضوع منقول Move limits definition in structural optimization with seque

Move limits definition in structural optimization with seque
أهلا و سهلا بكافّة الإخوة الأعضاء و الزوّآر في منتديات تونيزيا سات ....

Move limits definition in structural optimization
with sequential linear programming

Move limits definition in structural optimization with seque
Part I: optimization algorithm
Move limits definition in structural optimization with seque
Abstract
A variety of numerical methods have been proposed in literature in purpose to deal with the complexity and nonlinearity
of structural optimization problems. In practical design, sequential linear programming (SLP) is very popular
because of its inherent simplicity and because linear solvers (e.g. Simplex) are easily available. However, SLP performance
is sensitive to the definition of proper Move limits for the design variables which task itself often involves
considerable heuristics. This research presents a new SLP algorithm (LESLP––linearization error sequential linear
programming) that implements an advanced technique for defining the Move limits. The LESLP algorithm is formulated
so to overcome the traditional limitations of the SLP method. The new algorithm is successfully tested in weight
minimization problems of truss structures with up to hundreds of design variables and thousands of constraints: sizing
and configuration problems are considered. optimization problems of non-truss structures are also presented.
The key-ideas of LESLP and the discussion on numerical efficiency of the new algorithm are presented in a two-part
paper. The first part concerns the basics of the LESLP formulation and provides potential users with a guide to
programming LESLP on computers. In a companion paper, the numerical efficiency, advantages and drawbacks of
LESLP are discussed and compared to those of other SLP algorithms recently published or implemented in commercial
software packages.
Move limits definition in structural optimization with seque
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