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Parametric study of numerically modelled delamination process in a composite structure subjected to dynamic loading

Mazurkiewicz Ł., Damaziak K., Małachowski J., Baranowski P.

Engineering Transactions

2013

Vol. 61, iss. 1

15--31

Composite materials, especially those ﬁbre reinforced, thanks to their advantages, are being used in a growing number of industries. However, the complex structure of these materials results in many analytical problems. One such problematic ﬁeld is to model failure of a composite, and especially the delamination process. The aim of this paper is to ﬁnd a suitable method of layer connection modelling with the ability to describe delamination phenomena. A few chosen modelling parameters are investigated with respect to a parametric delamination numerical model.

Evolutionary identification of fuzzy material constants in laminates

Beluch W., Burczyński T., Orantek P.

Prace Naukowe Politechniki Warszawskiej. Elektronika

2007

z. 160

17-24

The paper deals with identification of material constans in fibre-reinforced laminates. The Evolutionary Algorithm is used as the global optimization method. The grandiet method supported by the Artificial Neutral Network is used as the local optimization method. Material constans are presented in the form of fuzzy numbers to model their uncertainty. Two types of laminates are considered: simple and hybrid ones. Modal analysis methods are used to collect data necessary for the identification process. The Finite Element Method in fuzzy version is used to solve the direct problem for the laminates. Numerical examples are attached.