Description:
In cooperation with RUAG Space, ÅF-Ingemansson in Göteborg is offering the following master´s thesis project.
The vibro-acoustic environment generated during launch is usually the most demanding structural load case for large, light-weight reflector antennas stowed on a satellite. Vibro-acoustic analyses are traditionally performed by means of BEM software. The cost to perform these analyses is relatively high since it requires special software packages currently not available at RUAG. This thesis project aims to study and develop an alternative method based on Finite Element Modeling (FEM), preferably Nastran software packages, which is used at RUAG. A new methodology might be an alternative, since recent development of FEM in vibro-acoustic analyses has increased the applicability of FE softwares. This includes elements for non-reflecting boundaries and efficient algorithms for fluid-structural interaction (FSI).
The thesis project comprises literature studies and theoretical analysis, including models of structure-acoustic coupling, differences and similarities between BEM and FEM, etc. Existing FE-models and test results from modal and vibro-acoustic tests, performed on a 2.4 m CFRP reflector design, may effectively be used as a reference case.
ÅF-Ingemansson will be responsible for the main supervision with support from RUAG regarding product and design specific issues. The work will be performed partly at ÅF-Ingemansson and partly at RUAG.
Qualifications:
The thesis is a 20 week commitment for two students. Starting time is as soon as possible, decided in collaboration with the students. Relevant education is either mechanical or civil engineering or engineering physics.
For more information please contact:
, ÅF, Gothenburg, 010-505 8475
, ÅF, Gothenburg, 010-505 8403
, RUAG Space AB, Gothenburg, 031-735 4547