000013086 001__ 13086
000013086 005__ 20161114160326.0
000013086 04107 $$aeng
000013086 046__ $$k2009-06-22
000013086 100__ $$aCalvi, A.
000013086 24500 $$aAssessment and improvement of test data in spacecraft base-driven sine vibration test

000013086 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013086 260__ $$bNational Technical University of Athens, 2009
000013086 506__ $$arestricted
000013086 520__ $$2eng$$aThis paper describes the main objectives and some identified methods of the study “DYNAMITED”, acronym for “Assessment and improvement of dynamic test data”. The study is funded by the European Space Agency (ESA) and performed by a consortium of European industries and university, led by EADS Astrium Satellites. The main objectives of the study “Dynamited” are to assess and quantify the uncertainty in the spacecraft sine vibration test data and to improve the quality and representativity of test data by introducing a set of testing procedures, methods and controls to be used during test preparation, execution and post-test analysis. The study started in December 2006 and is in progress under the technical management of ESA. In particular this paper provides an overview on two investigations in the area of the development of pre-test methodologies: the estimation of the scatter (uncertainties) on the spacecraft dynamic response due to identified sources of test uncertainties and the calculation of a “notched” sine test input spectrum based on a stochastic methodology. By means of Monte Carlo simulation, a stochastic cloud of the output of interest can be generated and this provides an estimate of the global error on test results. The cloud is generated by characterizing the assumed sources of test uncertainties by parameters of the structure finite element model and by quantifying the scatter of the parameters. The uncertain parameters are the input variables of the Monte Carlo simulation. It has been planned that all the developments of the study will be tested during the test campaign of the ESA spacecraft SWARM, in the first half of 2009.

000013086 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013086 653__ $$aSine Vibration Test, Test Uncertainties, Spacecraft, Stochastic Notching, Monte Carlo Simulation Abstract. This paper describes the main objectives and some identified methods of the study “DYNAMITED”, acronym for “Assessment and improvement of dynamic test data”. The study is funded by the European Space Agency (ESA) and performed by a consortium of European industries and university, led by EADS Astrium Satellites. The main objectives of the study “Dynamited” are to assess and quantify the uncertainty in the spacecraft sine vibration test data and to improve the quality and representativity of test data by introducing a set of testing procedures, methods and controls to be used during test preparation, execution and post-test analysis. The study started in December 2006 and is in progress under the technical management of ESA. In particular this paper provides an overview on two investigations in the area of the development of pre-test methodologies: the estimation of the scatter (uncertainties) on the spacecraft dynamic response due to identified sources of test uncertainties and the calculation of a “notched” sine test input spectrum based on a stochastic methodology. By means of Monte Carlo simulation, a stochastic cloud of the output of interest can be generated and this provides an estimate of the global error on test results. The cloud is generated by characterizing the assumed sources of test uncertainties by parameters of the structure finite element model and by quantifying the scatter of the parameters. The uncertain parameters are the input variables of the Monte Carlo simulation. It has been planned that all the developments of the study will be tested during the test campaign of the ESA spacecraft SWARM, in the first half of 2009.

000013086 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013086 720__ $$aCalvi, A.$$iLaborde, S.
000013086 8560_ $$ffischerc@itam.cas.cz
000013086 8564_ $$s469330$$uhttps://invenio.itam.cas.cz/record/13086/files/CD112.pdf$$yOriginal version of the author's contribution as presented on CD, section: Uncertainty and reliability in computational structural dynamics - ii (MS).
000013086 962__ $$r13074
000013086 980__ $$aPAPER