NUMERICAL INVESTIGATION OF STRUCTURAL RESPONSE OF CORRUGATED BLAST WALL DEPENDING ON BLAST LOAD PULSE SHAPES
Keywords:
EXPLOSION LOADS, LOADING PULSE SHAPE, NONLINEAR FINITE METHOD, STRUCTURAL CHARACTERISTICSAbstract
HYDROCARBON EXPLOSIONS ARE ONE OF MOST HAZARDOUS EVENTS FOR WORKERS ON OFFSHORE PLATFORMS. TO PROTECT STRUCTURES AGAINST EXPLOSION LOADS, CORRUGATED BLAST WALLS ARE TYPICALLY INSTALLED. HOWEVER, THE PROFILES OF REAL EXPLOSION LOADS ARE QUITE DIFFERENT DEPENDING ON THE CONGESTION AND CONFINEMENT OF TOPSIDE STRUC-TURES. AS THE LEVEL OF CONGESTION AND CONFINEMENT INCREASES, THE EXPLOSION LOAD INCREASES BY UP TO 8 BAR, AND THE RISING TIME OF THE LOAD DECREASES. THIS STUDY PRIMARILY AIMS TO INVESTIGATE THE STRUC-TURAL BEHAVIOR CHARACTERISTICS OF CORRUGATED BLAST WALLS UNDER DIFFERENT TYPES OF EXPLOSION LOADINGS. FOUR LOADING SHAPES WERE APPLIED IN THE STRUCTURAL RESPONSE ANALYSIS, WHICH UTILIZED A DY-NAMIC NONLINEAR FINITE ELEMENT METHOD.
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2017-07-10
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