Type of Document	Master's Thesis
Author	Chock, Jeffrey Mun Kong
Author's Email Address	jchock@vt.edu
URN	etd-043099-163540
Title	Review of Methods for Calculating Pressure Profiles of Explosive Air Blast and its Sample Application
Degree	Master of Science
Department	Aerospace and Ocean Engineering
Advisory Committee	Advisor Name Title Rakesh K. Kapania Committee Chair Efstratios Nikolaidis Committee Member Eric R. Johnson Committee Member Joseph A. Schetz Committee Member
Keywords	Air Blast Explosive Air Blast Profile Generation Pressure Profile Generation Blast
Date of Defense	1999-01-26
Availability	restricted
Abstract Blast profiles and two primary methods of determining them were reviewed for use in the creation of a computer program for calculating blast pressures which serves as a design tool to aid engineers or analysts in the study of structures subjected to explosive air blast. These methods were integrated into a computer program, BLAST.F, to generate air blast pressure profiles by one of these two differing methods. These two methods were compared after the creation of the program and can conservatively model the effects of spherical air blast and hemispherical surface burst. The code, BLAST.F, was used in conjunction with a commercial finite element code (NASTRAN) in a demonstration of method on a 30 by 30 inch aluminum 2519 quarter plate of fixed boundary conditions in hemispherical ground burst and showed good convergence with 256 elements for deflection and good agreement in equivalent stresses of a point near the blast between the 256 and 1024 element examples. Application of blasts to a hypothetical wing comprised of aluminum 7075-T6 was also conducted showing good versatility of method for using this program with other finite element models.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access  AJMKCTHESIS.PDF 2.72 Mb 00:12:35 00:06:28 00:05:39 00:02:49 00:00:14 indicates that a file or directory is accessible from the Virginia Tech campus network only.

If you have questions or technical problems, please Contact DLA.