Nonlinear Behaviour of Perforated Plate with Lining

  • O. R. Nandagopan Naval Physical & Oceanographic Laboratory, Kochi
  • S. Ranjith Kumar Naval Physical & Oceanographic Laboratory, Kochi
  • M. R. Rajesh Naval Physical & Oceanographic Laboratory, Kochi
  • K. Manoharan Naval Physical & Oceanographic Laboratory, Kochi
  • C. G. Nandakumar Cochin University of Science & Technology, Kochi
DOI: https://doi.org/10.14429/dsj.62.927
Keywords: Perforated Plate, geometric nonlinear analysis

Abstract

Perforated plate with lining has a construction of plate with perforation and a lining plate welded together to form a single plate. This type of plate is used as an acoustic sonar dome. Perforated plate with lining (PPL) is prone to stress concentration and subsequently such structural system falls into the large strain category. Experimental investigation on PPL is carried out in the present study to determine the static deflection of the plate. Numerical method is also followed for geometric nonlinear analysis using finite element method as an iterative interactive procedure. The deflection obtained from the numerical method is 8 per cent less than that obtained from experimental method. From numerical analysis, von Mises stress and maximum principal stress is also estimated to understanda bout the failure mode characteristics of PPL.

Defence Science Journal, 2012, 62(4), pp.248-251, DOI:http://dx.doi.org/10.14429/dsj.62.927

Author Biographies

O. R. Nandagopan, Naval Physical & Oceanographic Laboratory, Kochi
Dr O.R. Nandagopan has received ME(Production Engineering) from Anna University, Chennai in 1985 and PhD (Underwater Structures) from Cochin University ofScience & Technology, Kochi in 2011.Presently working as a Scientist G, Naval Physical and Oceanographic Laboratory(NPOL) , Kochi. He is Fellow of Institution of Engineers (India) and Member of Ocean Society of India.
S. Ranjith Kumar, Naval Physical & Oceanographic Laboratory, Kochi
Mr Ranjithkumar S. has obtained BE (Mechanical Engineering) from Kannur University, Kerala in 2005. Presently workingas an Engineer-SC at IPR, Department of Atomic Energy, Gandhinagar. He is a Fellow of Institution of Engineers (India) and Member of Ocean Society of India.
M. R. Rajesh, Naval Physical & Oceanographic Laboratory, Kochi
Mr Rajesh M.R. has obtained Diploma in Mechanical Engineering from State Board of Technical Education, Kerala in 2000. Presently working as a Senior Technical Assistant at NPOL, Kochi. He received DRDO Technology Group Award in 2011 and Safety Day Award in 2012.
K. Manoharan, Naval Physical & Oceanographic Laboratory, Kochi
Mr K. Manoharan has obtained Diploma in Mechanical Engineering from State Board of Technical Education, Kerala in 1982. Presently working as a Technical Officer ‘B’ at NPOL, Kochi. He received DRDO Technology Group Award in 2009 and DRDO Best Performance Award in 2011.
Published
2012-07-03
How to Cite
Nandagopan, O., Kumar, S., Rajesh, M., Manoharan, K., & Nandakumar, C. (2012). Nonlinear Behaviour of Perforated Plate with Lining. Defence Science Journal, 62(4), 248-251. https://doi.org/10.14429/dsj.62.927
Issue
Vol 62 No 4
Section
Engineering Science & Technology
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