# Hydro-Elastic Analysis of Marine Components Using MATLAB and Finite Element Analysis Techniques

## Authors

• Muhammad Shahid Akbar Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)
• Adnan Qamar Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)
• Muhammad Amjad Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)
• Muhammad Farooq Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)
• Faraz Fazal Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)

## Abstract

Marine engineering is very important as it is directly related to human life. 70% of our Earth is seas and rivers and most of the times the driving forces are provided by the flow of water which both provides buoyancy (to support the weight) and pushing forces due to flow. Balancing of the component is of main concern over the water surface and if it is controlled it is safer than travelling in airplanes where main objective is higher speeds than carrying higher loads. That’s why I chose this topic as my topic of research. In the present work, the hydro-elastic analysis of a marine component (ship’s hull) has been performed in order to facilitate the design of hull because its design plays key role for the safe voyage of a ship. The uniqueness of this design is that is does not involve complex geometries. First of all, a hull has been created using AutoCAD and Solid Edge. It was then analyzed assuming different loading condition like pressure and bending effects due to the ocean waves. Various possible movements i.e. rolling, yawing, pitching, heaving, slamming etc. of the hull in the marine environment have been mathematically formulated and then a detailed finite element analysis of resulting pressures and inertia forces due to the motion has been made. As a result of analysis, the safe bending, shearing and normal stresses and strains were automatically calculated by using Auto-FEM. The importance of this work is that the method of analysis can be applied and extended to other marine components undergoing the same type of loading conditions.

## Author Biographies

### Muhammad Shahid Akbar, Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)

Assistant Professsor, Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)

### Adnan Qamar, Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)

Lecturer, Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)

### Muhammad Amjad, Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)

Assistant Professsor, Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)

### Muhammad Farooq, Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)

Assistant Professsor, Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)

### Faraz Fazal, Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)

Lecturer, Mechanical Engineering Department, University of Engineering & Technology, Lahore (KSK Campus)

## References

Lewis E. “Principles of Naval Architecture and Marine Engineering”, the society of Naval Architecture and Marine Engineering, 1989.

Cheetam ” Hydrodynamic Analysis of Ships Side by Side in Waves”. 2007 International Aerospace CFD Conference, Paris, 18th and 19th June, 2007

Valle , “Analysis of a 3600 TEU container ship and her propeller using ANSYS®” 2007 International Aerospace CFD Conference, Paris, 18th and 19th June, 2007

Jan Carlos Matutat, “Numerical Modeling and Simulation of Ship Hull Geometries” Institute for Numerical Mathematics Ulm University, March 25, 2010.

Richard W. Garman & Philip J. Hatchard, "An Initial Technical Analysis and Feasibility Study of the Through-Hull Heat Transfer Concept," Vector Research Division R&D Report, 29 September 1998.

Senjanovic S. Tomasevic, N. vladimir and S. malenica “ Numerical Procedure For Ship Hydro-elastic Analysis” University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture Ivana Lucica 5, 10000 Zagreb, CROATIA Accessed: 27th May 2010

Michael A. Sprague , Thomas L. Geers. “A spectral-element/finite-element analysis of a ship-like structure subjected to an underwater explosion” Department of Mechanical Engineering, University of Colorado, Boulder, CO 80309-0427, United States

http://www.globalsecurity.org/military/systems/ship/hull.htm Accessed: 19th March 2010

http://www.worldwideflood.com/ark/anti_broaching/wave_yaw.htm Accessed: 20th january

Ferdinand P. Beer, John T. DeWolf “Mechanics of Materials” 4th Ed

http://www.worldwideflood.com/ark/hull_calcs/wave_bm1.htm Accessed: 12th September 2009

Edward Dudson, Hans Jorgen Rambech, Ming Kang Wu. “Determination of wave bending loads on a 40 knot, long slender open topped containership through model tests and hydrodynamic calculations with particular reference to the effects of hull flexibility on fatigue life”

http://sfc-mtm.ai3.net/class/20060026/materials/03/dec_6_iseki_final.ppt Accessed: 25th December 2009

http://www.gidb.itu.edu.tr/staff/taylan/ms/6_Roll%20Motion.pdf, Accessed: 17th December 2009