925 resultados para DROP-OUTS
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Texas Department of Transportation, Austin
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"Contract AT(30-1)-2789."
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Mode of access: Internet.
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"SCS-TP-106"--cover.
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"Printed: January 1988."
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Mode of access: Internet.
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"April 1969."
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Includes bibliographical references.
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Cover title.
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Cover title.
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Lister Hill, chairman of subcommittee.
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Item 1005-C
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Typescript (carbon copy).
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We present an analysis of the free vibration of plates with internal discontinuities due to central cut-outs. A numerical formulation for a basic L-shaped element which is divided into appropriate sub-domains that are dependent upon the location of the cut-out is used as the basic building element. Trial functions formed to satisfy certain boundary conditions are employed to define the transverse deflection of each sub-domain. Mathematical treatments in terms of the continuities in displacement, slope, moment, and higher derivatives between the adjacent sub-domains are enforced at the interconnecting edges. The energy functional results, from the proper assembly of the coupled strain and kinetic energy contributions of each sub-domain, are minimized via the Ritz procedure to extract the vibration frequencies and. mode shapes of the plates. The procedures are demonstrated by considering plates with central cut-outs that are subjected to two types of boundary conditions. (C) 2003 Elsevier Ltd. All rights reserved.