Response of Isotropic and Laminated Plates to Close Proximity Blast Loads

Simple item page
dc.contributor.authorCoggin, John Mooreen
dc.contributor.committeechairKapania, Rakesh K.en
dc.contributor.committeecochairJohnson, Eric R.en
dc.contributor.committeememberNikolaidis, Efstratiosen
dc.contributor.departmentAerospace and Ocean Engineeringen
dc.date.accessioned2014-03-14T20:32:39Zen
dc.date.adate2000-04-17en
dc.date.available2014-03-14T20:32:39Zen
dc.date.issued2000-02-15en
dc.date.rdate2001-04-17en
dc.date.sdate2000-03-15en
dc.description.abstractThe transient response of various plate structures subject to blast loads is analyzed. In particular, simply supported isotropic and laminated composite plates are modeled using the commercial finite element code NASTRAN and the method of modal superposition. Both analysis procedures are used to quantify the linear transient response of such plates subject to uniform and patch blast loads. Furthermore, NASTRAN is used to study the nonlinear response of plates subject to close proximity explosions. Also considered here is the case for which a blast loaded plate impacts another closely neighboring plate. The NASTRAN solution used here accounts for nonlinearities due to large plate deflections, plasticity, and plate-to-plate contact. Many studies are currently available in which the blast load is considered to be spatially uniform across the plate; with a temporal distribution described by step, N-pulse, or Friedlander equations. The novel aspect considered here is the case for which the blast pressure is due to a close proximity explosion, and it is therefore taken to be both spatially and temporally varying. A FORTRAN program is described which automates the application of an arbitrary blast load to a generic finite element mesh. The results presented here are a collection of analyses performed for a variety of parameters important to the dynamic response of blast loaded contacting plates. Conclusions are drawn concerning the influence of the various parameters on the nature of the plate response and the quality of the solution.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-03152000-10210026en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03152000-10210026/en
dc.identifier.urihttp://hdl.handle.net/10919/31477en
dc.publisherVirginia Techen
dc.relation.haspartfinalthesis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectcompositeen
dc.subjectcontacten
dc.subjectFinite element methoden
dc.subjectnonlinearen
dc.subjectblast loaden
dc.titleResponse of Isotropic and Laminated Plates to Close Proximity Blast Loadsen
dc.typeThesisen
thesis.degree.disciplineAerospace and Ocean Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
finalthesis.pdf
Size:
786.57 KB
Format:
Adobe Portable Document Format
Download

Collections

Masters Theses