Buckling behaviour of underwater vessels by experimental, numerical and analytical approaches

Authors

  • Moorthy Govindaraj R.V.College of Engineering, Visveswaraya Technological University, Belgaum.
  • HN Narasimha Murthy R.V.College of Engineering
  • Shivkumar Patil R.V.College of Engineering, Visveswaraya Technological University, Belgaum.
  • Sudarsan K. NPOL, Kochi, Kerala
  • Nandagopan O.R NPOL, Kochi, India
  • Ajith Kumar K. NPOL, Kochi, Kerala
  • Krishna Munishaiah R.V.College of Engineering, Visveswaraya Technological University, Belgaum.

DOI:

https://doi.org/10.3329/jname.v11i1.16087

Keywords:

Critical Buckling Pressure, FEA, Reduced Stiffness Matrix, Filament winding

Abstract

This paper reports the buckling behaviour of glass/vinylester polymer composite filament wound shells of underwater vessels. The shells were tested for buckling under hydrostatic loading and microstrains as a function of applied hydrostatic pressure were measured. Numerical analysis was performed for critical buckling pressure based on Block Lancoz buckling analysis and for Von-Mises stresses and strains based on static analysis using ANSYS. Von-Mises stresses corresponding to hydrostatic pressures were computed analytically by Reduced Stiffness Matrix method. The numerical results of critical buckling pressure for 10 mm thick vessels showed 7.12 % deviation from the experimental results. The microstrains predicted by FEA were in good agreement with the experimental strains. Von-Mises stresses predicted by FEA agreed well with the analytical computations.

DOI: http://dx.doi.org/10.3329/jname.v11i1.16087

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Author Biographies

Moorthy Govindaraj, R.V.College of Engineering, Visveswaraya Technological University, Belgaum.

Assistant Professor, Depatment of Mechanical Engineering, R.V.College of Engineering, Bangalore-560059.

HN Narasimha Murthy, R.V.College of Engineering

Dean, PG Studies, Department of Mechanical Engineering, R.V.College of Engineering, Bangalore

Shivkumar Patil, R.V.College of Engineering, Visveswaraya Technological University, Belgaum.

M.Tech Student, Department of Mechanical Engineering, R.V.College of Engineering, Bangalore-560059.

Sudarsan K., NPOL, Kochi, Kerala

Director, Naval Physical and Oceanographic Laboratory, Kochi, Kerala

Nandagopan O.R, NPOL, Kochi, India

Scientist G, Naval Physical and Oceanographic Laboratory, Kochi, Kerala

Ajith Kumar K., NPOL, Kochi, Kerala

Scientist D, Naval Physical and Oceanographic Laboratory, Kochi, Kerala

Krishna Munishaiah, R.V.College of Engineering, Visveswaraya Technological University, Belgaum.

Professor & Dean, Research and Development, Depatment of Mechanical Engineering, R.V.College of Engineering, Bangalore-560059.

References

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Published

10.06.2014

How to Cite

Govindaraj, M., Murthy, H. N., Patil, S., K., S., O.R, N., K., A. K., & Munishaiah, K. (2014). Buckling behaviour of underwater vessels by experimental, numerical and analytical approaches. Journal of Naval Architecture and Marine Engineering, 11(1), 15–28. https://doi.org/10.3329/jname.v11i1.16087

Issue

Vol. 11 No. 1 (2014)

Section

Articles

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