Reference : Note on singular optima in laminates design problems
Scientific journals : Article
Engineering, computing & technology : Aerospace & aeronautics engineering
Engineering, computing & technology : Materials science & engineering
Engineering, computing & technology : Mechanical engineering
http://hdl.handle.net/2268/4422
Note on singular optima in laminates design problems
English
Bruyneel, Michaël mailto [Université de Liège > Département d'aérospatiale et mécanique > Modél. num. du comport. des struct. en matériaux composites >]
Duysinx, Pierre mailto [Université de Liège > Département d'aérospatiale et mécanique > Ingénierie des véhicules terrestres >]
2006
Structural and Multidisciplinary Optimization
Springer
31
2
156-159
Yes (verified by ORBi)
International
1615-147X
1615-1488
New York
NY
[en] composite ; fibers orientations ; laminates ; optimization ; singular optima
[en] This paper studies the design of laminates subject to restrictions on the ply strength. The minimum weight design is considered. It is shown that this formulation includes singular optima, which are similar to the ones observed in topology optimization including local stress constraints. In laminate design, these singular optima are linked to the removal of 'zero thickness' plies from the stacking sequence. It is shown how the fiber orientation variables can circumvent the singularity by relaxing the strength constraints related to such vanishing plies. This demonstrates the key role of fiber orientations in the optimization of laminates and the need for their efficient treatment as design variables.
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/2268/4422
also: http://hdl.handle.net/2268/185873
10.1007/s00158-005-0569-2
http://link.springer.com/article/10.1007%2Fs00158-005-0569-2#page-1

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