FREE VIBRATION AND DYNAMIC RESPONSE ANALYSIS OF STIFFENED PARABOLIC SHELLS USING EQUIVALENT ORTHOTROPIC SHELL PARAMETERS

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PEDRAM EDALAT
MOHAMMAD REZA KHEDMATI
CARLOS GUEDES SOARES

Abstract

DYNAMIC RESPONSE AND FREE VIBRATION ANALYSIS OF STIFFENED SHELLS HAVING PARABOLIC CURVATURES WITH APPLICATIONS TO SHIPS AND OTHER SIMILAR STRUCTURES ARE THE MAIN FOCUS OF THIS STUDY. THE ENERGY APPROACH IS EMPLOYED TO THE DETERMINATION OF EQUIVALENT ORTHOTROPIC SHELL PARAMETERS OF PARABOLIC STIFFENED SHELLS. THE UNSTIFFENED EQUIVALENT SHELL HAS PROPER ACCURACY IN PREDICTING FREE VIBRATION CHARACTERISTICS AS WELL AS DYNAMIC RESPONSE OF THE MAIN STIFFENED SHELL. REDUCING THE GOVERNING EQUATION DIFFICULTIES WITH SUITABLE PRECISION IN FREE VIBRATION AND DYNAMIC RESPONSE ANALYSES IS THE MOST ADVANTAGE OF REPLACEMENT OF STIFFENED SHELLS WITH THEIR UNSTIFFENED EQUIVALENCES.

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Author Biographies

PEDRAM EDALAT, FACULTY OF MARINE TECHNOLOGY, AMIRKABIR UNIVERSITY OF TECHNOLOGY, 424 HAFEZ AVENUE, TEHRAN 15914, IRAN

PHD CANDIDATE IN MARINE STRUCTURAL ENGINEERING

MOHAMMAD REZA KHEDMATI, AMIRKABIR UNIVERSITY OF TECHNOLOGY

϶ B.SC. IN CIVIL ENGINEERING, AMIRKABIR UNIVERSITY OF TECHNOLOGY, TEHRAN, IRAN, 1985-1989.
϶ M.SC. IN NAVAL ARCHITECTURE, TECHNICAL UNIVERSITY OF GDANSK, GDANSK, POLAND, 1991-1993.
϶ DR.ENG. IN STRUCTURAL ENGINEERING, HIROSHIMA UNIVERSITY, HIGASHI-HIROSHIMA, JAPAN, 1997-2000.

+ ASSOCIATE PROFESSOR, FACULTY OF MARINE TECHNOLOGY, AMIRKABIR UNIVERSITY OF TECHNOLOGY, TEHRAN, IRAN, (SINCE APRIL 2007)

+ ASSISTANT PROFESSOR, FACULTY OF MARINE TECHNOLOGY, AMIRKABIR UNIVERSITY OF TECHNOLOGY, TEHRAN, IRAN, (OCT. 2000- APRIL 2007)

CARLOS GUEDES SOARES, CENTRE FOR MARINE TECHNOLOGY AND ENGINEERING (CENTEC), INSTITUTO SUPERIOR TéCNICO, TECHNICAL UNIVERSITY OF LISBON, LISBON, PORTUGAL

PROFESSOR, DIRECTOR OF CENTRE FOR MARINE TECHNOLOGY AND ENGINEERING (CENTEC), INSTITUTO SUPERIOR TéCNICO, TECHNICAL UNIVERSITY OF LISBON, LISBON, PORTUGAL

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