Shock analysis of a stern ramp using dynamic design analysis method
Paper i proceeding, 2017

Shock load caused by underwater explosion in naval battles can lead to malfunction of the equipment on-board naval vessels. It makes the ships vulnerable and they can lose the ability to accomplish their missions. This study presents a shock analysis, using the dynamic design analysis method (DDAM), of a naval ship stern ramp subjected to a non-contact underwater explosion. The objective is to evaluate the performance of the ramp subjected to a shock load, identify areas for structural improvements and recommend design changes. The DDAM in the commercial software ANSYS is used in the evaluation of the ramp. The structural response to the shock load is estimated by combined modal and response spectrum analyses. The shock load is applied in three directions (vertical, fore and aft, athwart ships) and the results show that the vertical direction is the most severe loading direction and critical to the functionality of the ramp. A parametric study is presented which shows which parameters that influence the most the structural response. The results from this study are used to suggest improvements of the ramp structure to make it more resistant to shock loads.

shock analysis

ANSYS

dynamic design analysis

modal analysis

stern ramp

response spectrum analysis

Författare

Jonas Ringsberg

Chalmers, Sjöfart och marin teknik, Marin teknik

Erland Johnson

RISE Research Institutes of Sweden

Chalmers, Sjöfart och marin teknik, Marin teknik

Meng Zhang

Chalmers, Sjöfart och marin teknik, Marin teknik

Yunbo Yu

Chalmers, Sjöfart och marin teknik, Marin teknik

Proceedings of The ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2017)

1-11 OMAE2017-61043

The ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2017)
Trondheim, Norway,

Ämneskategorier

Maskinteknik

Materialteknik

Farkostteknik

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Styrkeområden

Transport

Produktion

Materialvetenskap

Fundament

Grundläggande vetenskaper

DOI

10.1115/OMAE201761043

Mer information

Senast uppdaterat

2018-10-08