MECHANICS OF CRACK BRIDGING UNDER DYNAMIC LOADS

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A bridging law for fiber reinforced composites under dynamic crack propagation conditions has been derived. Inertial effects in the mechanism of fiber pullout during dynamic propagation of a bridged crack are critically examined for the first time. By reposing simple shear lag models of pullout as problems of dynamic wave propagation, the effect of the frictional coupling between the fibers and the matrix is accounted for in a fairly straightforward way. The solutions yield the time-dependent relationship between the crack opening displacement and the bridging traction. Engineering criteria and the role of material and geometrical parameters for significant inertial effects ... continued below

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123 Kilobytes pages

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SRIDHAR, N. & AL, ET February 1, 2001.

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A bridging law for fiber reinforced composites under dynamic crack propagation conditions has been derived. Inertial effects in the mechanism of fiber pullout during dynamic propagation of a bridged crack are critically examined for the first time. By reposing simple shear lag models of pullout as problems of dynamic wave propagation, the effect of the frictional coupling between the fibers and the matrix is accounted for in a fairly straightforward way. The solutions yield the time-dependent relationship between the crack opening displacement and the bridging traction. Engineering criteria and the role of material and geometrical parameters for significant inertial effects are identified.

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123 Kilobytes pages

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  • Report No.: LA-UR-01-847
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 774572
  • Archival Resource Key: ark:/67531/metadc717729

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  • February 1, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • March 30, 2016, 1:04 p.m.

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SRIDHAR, N. & AL, ET. MECHANICS OF CRACK BRIDGING UNDER DYNAMIC LOADS, article, February 1, 2001; New Mexico. (digital.library.unt.edu/ark:/67531/metadc717729/: accessed November 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.