EQUIVALENT HALF PULSE (EHP) METHOD FOR VIBRATION ANALYSIS UNDER REGULAR WAVE

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TABESHPOUR MOHAMMAD REZA; EBRAHIMI HOSSEIN; Fatemi Mani

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Seminar Paper

Paper Information

Seminar: MARINE INDUSTRIES CONFERENCE (MIC)
Year:2015 | Issue:17

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Title

EQUIVALENT HALF PULSE (EHP) METHOD FOR VIBRATION ANALYSIS UNDER REGULAR WAVE

Author(s)

TABESHPOUR MOHAMMAD REZA | EBRAHIMI HOSSEIN | Fatemi Mani

Keywords

RESPONSE SPECTRUM

ASSESSMENT

VIBRATION ANALYSIS

Abstract

FULLY DYNAMIC ANALYSIS OF OFFSHORE STRUCTURES UNDER RANDOM WAVE LOADS IN TIME DOMAIN IS SOMETIMES NECESSARY FOR CALCULATING STRUCTURAL RESPONSES IN DESIGN ISSUES. SUCH ANALYSES ARE VERY TIME CONSUMING AND THEREFOR SIMPLIFIED METHODS FOR ESTIMATION OF ACCEPTABLE RESPONSE OF THESE STRUCTURES CAN BE VERY USEFUL IN INITIAL DESIGN. IN THIS PAPER AN INNOVATIVE METHOD TO OBTAIN RESPONSE SPECTRUM OF FIXED OFFSHORE STRUCTURES CAUSED BY EXTREME WAVES IS REPRESENT BASED ON CONCEPT OF IMPULSE RESPONSE SPECTRUM. FOR THIS PURPOSE THE STRUCTURAL SYSTEM IS CONSIDERED AS A SIMPLE ONE DEGREE OF FREEDOM STRUCTURE AND THE DIFFERENT SEA STATES ARE EQUALIZED TO DIFFERENT HALF SINUSOIDAL PULSES. RESPONSE SPECTRUM OF STRUCTURE IS DEFINED AS A PLOT OF STRUCTURAL RESPONSE TO THESE PULSES FOR DIFFERENT PERIODS. BY USING THIS METHOD THE COST OF COMPUTATIONS IS DECREASED SIGNIFICANTLY WHILE THE ACCURACY OF RESULTS WAS PRESERVED.

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APA: Copy

TABESHPOUR, MOHAMMAD REZA, EBRAHIMI, HOSSEIN, & Fatemi, Mani. (2015). EQUIVALENT HALF PULSE (EHP) METHOD FOR VIBRATION ANALYSIS UNDER REGULAR WAVE. MARINE INDUSTRIES CONFERENCE (MIC). SID. https://sid.ir/paper/921285/en

Vancouver: Copy

TABESHPOUR MOHAMMAD REZA, EBRAHIMI HOSSEIN, Fatemi Mani. EQUIVALENT HALF PULSE (EHP) METHOD FOR VIBRATION ANALYSIS UNDER REGULAR WAVE. 2015. Available from: https://sid.ir/paper/921285/en

IEEE: Copy

MOHAMMAD REZA TABESHPOUR, HOSSEIN EBRAHIMI, and Mani Fatemi, “EQUIVALENT HALF PULSE (EHP) METHOD FOR VIBRATION ANALYSIS UNDER REGULAR WAVE,” presented at the MARINE INDUSTRIES CONFERENCE (MIC). 2015, [Online]. Available: https://sid.ir/paper/921285/en

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