Conference Paper

Characterization of the pressure wave emitted from implosion of submerged cylindrical shell structures

Conference: Proceedings of the Internoise 2012/ASME NCAD meeting, At New York, NY
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    ABSTRACT: The treatment of zero energy modes which arise due to one-point integration of first-order isoparametric finite elements is addressed. A method for precisely isolating these modes for arbitrary geometry is developed. Two hourglass control schemes, viscous and elastic, are presented and examined. In addition, a convenient one-point integration scheme which analytically integrates the element volume and uniform strain modes is presented.
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May 17, 2014