A method is presented that incorporates hydrodynamic radiation forces in the floating frame of reference method used in flexible multibody dynamics. These hydrodynamic forces are approximated such that the fully hydro-elastically coupled problem can be solved at once using standard techniques. To this end, the elastic deformation of the body that is (partially) submerged is described using Craig-Bampton modes. The generalized hydrodynamic forces caused by motion in these modes are computed using a source panel method. In a frequency domain parameter identification procedure, the solution of the remaining radiation problem is approximated by a transfer function that represents a convenient physical system. This is done such that the corresponding differential equations in the time domain describe a mechanical system. The method is illustrated for a two-dimensional partially submerged cylinder.
|Title of host publication||Proceedings of ISMA 2016 - International Conference on Noise and Vibration Engineering and USD2016 - International Conference on Uncertainty in Structural Dynamics 2016|
|Editors||P. Sas, D. Moens, A. van de Walle|
|Place of Publication||Leuven|
|Publication status||Published - 2016|
|Event||27th International Conference on Noise and Vibration Engineering, ISMA 2016 - Heverlee, Belgium|
Duration: 19 Sep 2016 → 21 Sep 2016
Conference number: 27
|Publisher||KULeuven, 19-21 september 2016|
|Conference||27th International Conference on Noise and Vibration Engineering, ISMA 2016|
|Period||19/09/16 → 21/09/16|
Schilder, J. P., Ellenbroek, M. H. M., Hagmeijer, R., & de Boer, A. (2016). Hydro-elasticity in flexible multibody dynamics. In P. Sas, D. Moens, & A. van de Walle (Eds.), Proceedings of ISMA 2016 - International Conference on Noise and Vibration Engineering and USD2016 - International Conference on Uncertainty in Structural Dynamics 2016 (pp. 3589-3597). Leuven.