Thomas Rettenwander, Michael Fischlschweiger, Georg Steinbichler,
"Computational structural tailoring of continuous fibre reinforced polymer matrix composites by hybridisation of principal stress and thickness optimisation"
, in Composite Structures, Vol. 108, Seite(n) 711-719, 2014, ISSN: 1879-1085
Computational structural tailoring of continuous fibre reinforced polymer matrix composites by hybridisation of principal stress and thickness optimisation
Sprache des Titels:
Anisotropic composite material properties require special designing capabilities to fully exploit the
remarkable properties in longitudinal fibre direction for stiffness and strength improvement. Therefore
an optimisation scheme with hierarchical structuring of an optimality criterion based orientation optimisation
and a gradient based technique for thickness optimisation is presented. The procedure is applied
on two different space scales. Orientation optimisation based on principal stress directions is applied on a
local laminate position. There fibre directions are affixed throughout the laminate until convergence is
reached. On a local ply position thicknesses are determined in an iterative procedure. It is switched
between both algorithms until global convergence is achieved. The application of algorithms on two different
space scales leads to a robust engineering approach. The ability of the presented algorithm is tested
with a numerical example and a structural optimisation of laminated composites is shown.