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2 2008

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Evolutionary multi-objective optimization of laminates

Beluch W., Burczyński T., Długosz A.

Prace Naukowe Politechniki Warszawskiej. Elektronika

2008

z. 165

43-50

The paper deals with the application of the global optimization methods to the multi-objective optimization of laminates. A multi-layered, fibre-reinforced and hybrid laminates are considered. Different optimization criteria connected with the laminates' cost, modal properties and stiffness are taken into account. As the optimization criteria usually cannot be satisfied simultaneously, the multi-objective optimization methods are employed. The multi-objective evolutionary algorithm with the Pareto approach is used as the global optimization method. The Finite Element Method is used to solve a boundary-value problem for the laminates. The stacking sequence and the number or plies made of different materials are design variables. The discrete as well as continuous fibre orientation angles in particular plies are considered. Numerical example presenting non-dominated solutions for two contradictory optimization criteria is attached.

Stationary heat conduction in a laminate with functionally graded macrostructure (FGM)

Jędrysiak J., Radzikowska A.

Fizyka Budowli w Teorii i Praktyce

2008

T. 3

23-26

In this contribution a problem of heat conuction in a laminate with functionally graded macrostructure is considered. This composite is made of two components, which re non-periodically distributed in laminae with constant thickess. Macroscopic (effective) properties of this composite are continuously varied along an axis perpendicular to laminae. In this note an averaged model of heat conduction is applied. This model is based on concepts of the tolerance averaging technique, cf. Woźniak and Wierzbicki |9|.