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**Harvard**

Heggelund, S., Li, Z., Jang, B. och Ringsberg, J. (2015) *Quasi-static assessment of response to slamming impact on free fall lifeboats*.

** BibTeX **

@conference{

Heggelund2015,

author={Heggelund, Svein Erling and Li, Zhiyuan and Jang, Beom-Seon and Ringsberg, Jonas},

title={Quasi-static assessment of response to slamming impact on free fall lifeboats},

booktitle={Proceedings of the ASME Thirty-fourth International Conference on Ocean, Offshore and Arctic Engineering (OMAE2015) in St John's, Newfoundland and Labrador, Canada, May 31-June 5, 2015. },

isbn={978-079185649-9},

pages={10},

abstract={Design against impact loads (slamming) can be challenging and time consuming and can involve complex calculations. Application of simplified, quasi-static calculation approaches will make the design process much easier. In this paper, such simplified methods are discussed using free fall lifeboats as a case. Results from non-linear FE-analysis show that the response is non-linear due to large deformations. The impact pressure is then mainly carried by membrane stress and the dynamic response is small. A non-linear beam theory approach for hand calculation is established. As the non-linear calculation model is the most realistic, it is recommended that this is used in an initial design assessment. Although the results are on the conservative side, simple hand calculations including non-linear geometry can be used to predict the maximum strain. Linear methods are also investigated. However, these methods should be used with more rigid structures such as stiffened steel and aluminium panels.},

year={2015},

keywords={Quasi-static response, slamming, free fall lifeboats},

}

** RefWorks **

RT Conference Proceedings

SR Electronic

ID 217869

A1 Heggelund, Svein Erling

A1 Li, Zhiyuan

A1 Jang, Beom-Seon

A1 Ringsberg, Jonas

T1 Quasi-static assessment of response to slamming impact on free fall lifeboats

YR 2015

T2 Proceedings of the ASME Thirty-fourth International Conference on Ocean, Offshore and Arctic Engineering (OMAE2015) in St John's, Newfoundland and Labrador, Canada, May 31-June 5, 2015.

SN 978-079185649-9

AB Design against impact loads (slamming) can be challenging and time consuming and can involve complex calculations. Application of simplified, quasi-static calculation approaches will make the design process much easier. In this paper, such simplified methods are discussed using free fall lifeboats as a case. Results from non-linear FE-analysis show that the response is non-linear due to large deformations. The impact pressure is then mainly carried by membrane stress and the dynamic response is small. A non-linear beam theory approach for hand calculation is established. As the non-linear calculation model is the most realistic, it is recommended that this is used in an initial design assessment. Although the results are on the conservative side, simple hand calculations including non-linear geometry can be used to predict the maximum strain. Linear methods are also investigated. However, these methods should be used with more rigid structures such as stiffened steel and aluminium panels.

LA eng

DO 10.1115/OMAE201541810

LK http://dx.doi.org/10.1115/OMAE201541810

OL 30