12-1- publication-978-3-8484-9008-0_coverpreview

Saeed Jabalamelian Aidy Ali

Azmah Hanim

EXPLOSIVE FORMINGNumerical Analysis of

Explosive Hydro Forming Process

This study presents a numerical investigation on the deformation of thecircular blanket against a male die under impulsive loading to form atorispherical heads shape. A finite element model was developed andverified with experimental tests for the explosive forming of thetorispherical heads made of AA5083 aluminum alloy in the framework ofLS-DYNA crash simulator software. The nature of the deformation wasturned from the stretching to the buckling and compression across thespecimen by using a male die, which is a novel concept in the high speedforming processes. Johnson-Cook (JC) and Modified Zerilli-Armstrong(MZA) constitutive equations were used to describe the behavior of thespecimen in a high strain rate forming process with different stress status.Most of the experimentally observed material behaviors simulated well inpure tension or compression tests, while the transient zone was notadequately described. The blast loading process including the underwaterdetonation and the interaction with the specimen simulated usingArbitrary Lagrangian-Eulerian formulation as well as cavitations andreloading effect.

Saeed Jabalamelian

MSC Saeed Jabalamelian has obtained bachelordegree in Mechanical Engineering from Malek AshtarUniversity of Technology.He has studied the behaviorof materials in high strain rate, high temperaturedeformation and was awarded Master of Sciencedegree by University of Putra Malaysia in 2012 forinvestigate a novel Explosive Forming Process.

978-3-8484-9008-0

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GSaeed

Jabalam

elian, A. A

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