Autors: KRISHNAPILLAI,K., JONES,R., PENG,D.
Title: Fatigue based structural design optimization implementing a generalized Frost-Dugdale crack growth law
Keywords: Structural optimisation; Finite element; Cluster computing;

Abstract: The structural optimisation procedure proposed integrates 3D geometrical modelling, structural analysis and optimization into one complete and automated computer-aided design process. This approach includes the implementation of the generalised Frost-Dugdale model, in which recent observation has revealed a near log-linear relationship between natural log of the crack length and the fatigue life for crack growth lengths as small as a few microns.The research presented here uses the generalised Frost-Dugdale model in a 3D numerical fatigue based optimisation study of a 7050-T7451 Aluminium structure. Two types of optimisation techniques were considered for this investigation; a gradient-less based and an enumeration scheme. As a result, this procedure illustrates that for the design of light weight structures, a fatigue based optimisation used in conjunction with visualisation of the solution space may provide a viable design methodology.

References

    Issue

    10th WSEAS International Conference on MATHEMATICAL METHODS AND COMPUTATIONAL TECHNIQUES IN ELECTRICAL ENGINEERING (MMACTEE'08), pp. 251-258, 2008, Bulgaria,

    Вид: публикация в национален форум