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Control Number311104
Date and Time of Latest Transaction20150706095148.AM
General Information150706s |||||||||b ||00|||
Cataloging SourceSTII-DOST
Local Call NumberScienceDirect
Main Entry - Personal NameHoo Fatt, Michelle S.
 Sirivolu, Dushyanth
Title StatementA wave propagation model for the high velocity impact response of a composite sandwich panel by Michelle S. Hoo Fatt and Dushyanth Sirivolu
Physical Descriptionpages 117-130 computer file; text; 1,065kb
Summary, Etc.A solution methodology to predict the residual velocity of a hemispherical-nose cylindrical projectile impacting a composite sandwich panel at high velocity is presented. The term high velocity impact is used to describe impact scenarios where the projectile perforates the panel and exits with a residual velocity. The solution is derived from a wave propagation model involving deformation and failure of facesheets, through-thickness propagation of shock waves in the core, and through-thickness core shear failure. Equations of motion for the projectile and effective masses of the facesheets and core as the shock waves travel through sandwich panel are derived using Lagrangian mechanics. The analytical approach is mechanistic involving no detail account of progressive damage due to delamination and debonding but changes in the load-bearing resistance of the sandwich panel due to failure and complete loss of resistance from the facesheets and core during projectile penetration. The predicted transient deflection and velocity of the projectile and sandwich panel compared fairly well with results from finite element analysis. Analytical predictions of the projectile residual velocities were also found to be in good agreement with experimental data
Subject Added Entry - Topical TermEngineering
 Mechanical Engineering (Product code)
 Engineering Services
 Wave propagation -- Analysis
LocationDOST STII ScienceDirect NONPRINTS NP 14-15418 1 14-15418 Online/Download 2012-01-12
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Department of Science and Technology
Science and Technology Information InstituteScienceDirect
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