Steady state analysis of ice scouring via conformal mapping

 

The sea bed of coastal regions is frequently subjected to scouring or gouging by massive bodies of ice such as icebergs.

 

The sea bed of coastal regions is frequently subjected to scouring or gouging by massive bodies of ice such as icebergs.

This fact poses restrictions on the serviceability of marine pipelines and other related sea bed structures. The depth of the scours, as well as the extent of the disturbed zone below, is of utmost importance in their design. This paper describes a semi-analytic approach, based on the Strain Path Method, to determine the stress and strain rate field, in a strain rate mode of deformation. The model described herein is valid for a stationary state of stress, attained after a continuous redistribution beginning with the initial elastic state. A conformal mapping scheme is utilized to transform the physical domain of interest to the canonical complex plane, in order to the determine the velocity field. Whereas a bounding technique, based on the principle of virtual work, is employed to determine a global force at the ice-soil interface. Finally, the strain field is determined by integrating the strain rate field along different strain paths.


  The sea …


AUTORI: Forieo A., von Keviczky A.
RIG ANNO:1999 NUMERO:3
Numero di pagine: 5


Allegato: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2000_3_5.pdf
Allegato:
Articolo completo: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2000_3_5.pdf