An integrated approach to structural shape optimization of linearly elastic structures. Part I: General methodology

Hinton, E.; Rao, N. Bheema; Özakça, Mustafa

doi:10.1016/0956-0521(91)90037-6

Cited by 16 publications

(2 citation statements)

References 12 publications

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“…This highlighted the early studies in the field and identified the need for a more integrated approach to the problem that has since been described by Hinton et al (1991a,b). In Hinton et al (1991a), the structure of an integrated approach for structural shape optimisation is proposed and demonstrated on a number of simple examples. This highlighted the significant computing requirements that still remain a problem today as well as the need for robust meshing schemes that will lead to accurate finite element solutions to the structural problem.…”

Section: Optimisationmentioning

confidence: 99%

“…Figure 1 shows the optimisation algorithm used in this work that shares the framework proposed in Hinton et al (1991a). The process starts with 397 initialisation of the general geometrical and physical properties of the problem, the initial values for design variables and their lower and upper bound limits and definition of the constraint and objective functions.…”

Section: Optimisation Proceduresmentioning

confidence: 99%

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Thermal optimisation in the sand casting process

Lewis

Manzari²,

Gethin³

2001

Engineering Computations

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The general procedure of thermal optimisation in the sand casting process is addressed. Various aspects of design including the size and position of feeders and chills are discussed and practical approaches are presented to search for optimum design configurations. An algorithm is also presented for finding the optimum size, position and number of chills in a sand casting process. The presence of the chill(s) in the casting configuration is simulated using a one‐dimensional heat conduction model and proper inter‐facial heat transfer coefficients. The method is efficient as all computations are carried out on the same grid and there is no need for re‐meshing due to re‐sizing or re‐positioning of the chills. A finite element thermal analysis module is linked to a commercial optimisation tool to search for the optimum set of design variables and a computationally efficient sensitivity analysis method is introduced. Three sand casting test cases are solved to validate and demonstrate the optimisation procedure and these show its use to determine the optimum size, location and number of feeders and chills on a section through a casting.

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Section: Optimisationmentioning

confidence: 99%

Section: Optimisation Proceduresmentioning

confidence: 99%