Dear Bentley,

I requested SACS to have the VANILLA module to calculate "Dynamic Level Ice Loading" in the future development.

Currently, SACS already have ice vibration module which is based on "Ice Tooth model". This fundamental model and concept is NOT accepted by verification party i.e. DNV.

However, VANILLA concept which is based on variation of contact area is much more widely accepted by verification party.

At the moment, we need to use other software to calculate the load and input it back as the Loading Time History which is very tedious job.

It would be wise and helpful, If SACS can integrate this VANILLA algorithm into SACS package.

The fundamental basis of VANILLA can be referred to publications below.

Dynamic response of an offshore structure interacting with an ice floe failing in crushing , Hayo Hendrikse, Torodd S. Nord, Marine Structures, Volume 65, May 2019, Pages 271-290

https://www.sciencedirect.com/science/article/pii/S0951833918303496

And there is even a bit of Matlab code linked there with the equations implemented in basic form for a structure with one degree of freedom.

In terms of defining the input parameters for design purposes it may be worthwhile to read this where the approach is defined:

Experimental validation of a model for prediction of dynamic ice-structure interaction, H. Hendrikse, G. Ziemer, C.C. Owen, Cold Regions Science and Technology, Volume 151, July 2018, Pages 345-358

https://www.sciencedirect.com/science/article/pii/S0165232X17305578

And this where we explain how we did it for SGRE turbines:

Coupled Simulation of Ice-Structure Interaction of Offshore Wind Turbines in Bhawc Using Vanilla, Tom Willems, H. Hendriks, POAC, 2019

https://repository.tudelft.nl/record/uuid:d2b72598-922f-42f3-acc6-e2f7b9bc2a98

That should provide most of the information needed to develop your software.

I hope Bentley will consider this more seriously as the project in Baltic Sea which is sea-ice threaten area is booming now. We are currently due with many platforms relating to sea-ice vibration at the moment. We would like to find the optimum solution for this in near future.

Regards

Kasiphon Kurojjanawong