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Extension of the Lack of Knowledge (LOK) theory to force uncertainties
Extension of the Lack of Knowledge (LOK) theory to force uncertainties
- Source :
- Proceedings of IMAC XXIV-Conference & Exposition on Structural Dynamics, IMAC XXIV-Conference & Exposition on Structural Dynamics, IMAC XXIV-Conference & Exposition on Structural Dynamics, 2006, Saint-Louis, United States. pp.CD-ROM
- Publication Year :
- 2006
- Publisher :
- HAL CCSD, 2006.
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Abstract
- International audience; This paper deals with the structural modeling of a family of similar, actual structures taking into account uncertainties and modeling errors. The concept of Lack Of Knowledge (LOK), first introduced in [1,2], consists in globalizing the various sources of errors on the substructure using internal variables, called the LOK variables, defined over an interval whose upper and lower bounds follow probabilistic laws. From these basic LOK, we can derive for the whole structure the effective LOK for a quantity of interest a, resulting in an interval with stochastic bounds that we can compare with experimental values. First, errors on the ”structural stiffness” have been considered [1,2,4]. Here we go further, extending the concept of LOK to modelize errors on applied forces, the mathematical framework being the same.
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Proceedings of IMAC XXIV-Conference & Exposition on Structural Dynamics, IMAC XXIV-Conference & Exposition on Structural Dynamics, IMAC XXIV-Conference & Exposition on Structural Dynamics, 2006, Saint-Louis, United States. pp.CD-ROM
- Accession number :
- edsair.dedup.wf.001..833e8ff8b388c5bbbe54341b93e0a5c0