## Topological Optimisation of Satellites Structures
**Nikolas Kawski, Sogeti**
In the aerospace industry, the gain in mass is a major issue
which, when it is solved, leads to significant cost reduction.
Through this presentation we will present the gain in mass
obtained on a satellite structure through an optimisation
process.
The challenges of any research of new design are to reach
a concept respecting specific criteria, for example frequency
level, as well as to ensure its manufacturability.
In order to satisfy these constraints, our research of new
concepts of satellites coupled a topological optimisation
to a sizing optimisation of a finite element model. The definition
of a new design is reached through the topological optimisation,
respecting both frequency level and manufacturability. Then,
the sizing of this new design is optimised in order to find
the lightest structure respecting our stress and frequency
criteria.
The OptiStruct solver associated to HyperMesh
(Altair products) enables the management
of a complete research of innovative designs,
from topological to sizing optimisation.
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