TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








On assessment of dynamic strength in waves for detailed support-free models of hull structures



Full text article ( in russian)

Year

 
2019

Issue

 
20191

Volume

 
1

Pages

 
82-90

Caption

 
On assessment of dynamic strength in waves for detailed support-free models of hull structures

Authors

 
Mironov M.Yu., Mudrik R.S.

Keywords

 
potential fluid, added masses, 3D motions, external force problem, support-free FE model, correct load transfer, global and local stresses, time- and frequency-domain solution, software package

DOI

 
10.24937/2542-2324-2019-1-S-I-82-90

Summary

 
Cross-disciplinary CAE-based calculations of ship movement and strains in fluid, at launching device, during ice interaction or in case of a navigation accident require very performant computers, and their results can neither differentiate specific movement shapes nor be checked by means of a physical experiment, so their verification is a very important task. Automated algorithms based on common assessment procedures for movement components and external forces made it possible to not only verify numerical calculations of apparent dynamics, but also to obtain justified and rational layouts for arrangement of external load monitoring sensors, as well as to refine these common procedures as a separate field of studies and use more accurate estimates of external forces in design algorithms. The task is to correctly transfer the obtained information on movement and pressure fields to the analytical model under straining. The model is support-free, so kinematic conditions must be imposed on it so as not to distort realistic stressed state. In the unsteady formulation, it is necessary to correctly consider inertial and damping properties of fluid and structure itself, ensuring correct transition to the quasi-static formulation. Computer-based algebra of PTC

Back to the list



 





 
Login:
Password:
Register
Forgot your password?


Last issues

All rights reserved © Krylov state research centre, 2019


ISSN (print) 2542-2324 / ISSN (online) 2618-8244

Address: Moskovskoye shosse, 44, Saint-Petersburg, 196158

Phone: +7(812) 415-49-80