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Adjoint sensitivity analysis of flexible multibody systems in differential-algebraic form
Publikationstyp
Journal Article
Publikationsdatum
2020-02
Sprache
English
Author
Institut
TORE-URI
Enthalten in
Volume
228
Article Number
106148
Citation
Computers and Structures (228): 106148 (2020-02)
Publisher DOI
Scopus ID
In the analysis and optimization of flexible multibody systems, an efficient sensitivity analysis can be performed using the adjoint variable method. Thereby, the procedure strongly depends on the equations of motion, which can be formulated either by minimal or by redundant coordinates yielding in turn a system of ordinary or differential-algebraic equations. In the current work, redundant coordinates are used to set an adjoint system for the sensitivity analysis of flexible multibody systems with kinematic loops, which are modeled using the floating frame of reference formulation. The procedure is tested by computing the structural gradient for the flexible crank of a slider-crank mechanism and compared with a reference procedure, where the adjoint system is formulated using minimal coordinates.
Schlagworte
Adjoint variable method
Differential-algebraic equations
Flexible multibody systems
Floating frame of reference approach
Sensitivity analysis