Abstract
Optimisation of stacking sequence for composite panels under slamming impact loads using a genetic algorithm method is studied in this paper. For this purpose, slamming load is assumed to have a uniform distribution with a triangular-pulse type of intensity function. In order to perform optimisation based on a genetic algorithm, a special code is written in MATLAB software environment. The optimiser is coupled with the commercial software ANSYS in order to analyse the composite panel under study and calculate the central deflection. After validation, different cases of stacking sequence optimisation are investigated for a variety of composite panels. The investigations include symmetric as well as asymmetric conditions of stacking sequence. Results obtained from these analyses reveal the fact that the adopted approach based on a genetic algorithm is highly capable of performing such optimisations.
Highlights
Composite materials owing to their lower densities and higher strength-to-weight ratios are considered to be more advantageous than metallic materials
Different cases are investigated below in order to show how the optimum stacking sequence of the plies is determined for the slamming impact loaded composite panels applying the adopted GAFEA optimisation procedure
An investigation was made into optimization of stacking sequence for the composite panels under slamming impact loads typically observed in the marine applications
Summary
Composite materials owing to their lower densities and higher strength-to-weight ratios are considered to be more advantageous than metallic materials. 1044 M.R. Khedmati et al / Stacking Sequence Optimisation of Composite Panels Subjected to Slamming Impact Loads using a Genetic Algorithm materials in the construction of high speed marine vehicles is outstanding. Composite panels in the structure of high speed crafts are typically subjected to many different types of in-plane or out-of-plane loads Among these loads, slamming impact loads are to be considered with a high level of attention. Wagner’s work was truly remarkable so that it is still being used in order to estimate the lateral impact loads In both of these methods, the hydro elasticity effects induced by fluid-structure interactions were ignored. M.R. Khedmati et al / Stacking Sequence Optimisation of Composite Panels Subjected to Slamming Impact Loads using a Genetic Algorithm 1045 gy absorption. Optimisation of stacking sequence for composite panels under slamming impact loads using a genetic algorithm method is studied in this paper. The investigations include symmetric as well as asymmetric conditions of stacking sequence
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