Note on sufficient symmetry conditions for isotropy of the elastic moduli tensor

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Group theoretical methods are used to obtain the form of the elastic moduli matrices and the number of independent parameters for various symmetries. Particular attention is given to symmetry groups for which 3D and 2D isotropy is found for the stress-strain tensor relation. The number of independent parameters is given by the number of times the fully symmetric representation is contained in the direct product of the irreducible representations for two symmetrical second rank tensors. The basis functions for the lower symmetry groups are found from the compatibility relations and are explicitly related to the elastic moduli. These types of ... continued below

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Pages: (14 p)

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Dresselhaus, M.S. & Dresselhaus, G. (Massachusetts Inst. of Tech., Cambridge, MA (USA)) August 29, 1990.

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Description

Group theoretical methods are used to obtain the form of the elastic moduli matrices and the number of independent parameters for various symmetries. Particular attention is given to symmetry groups for which 3D and 2D isotropy is found for the stress-strain tensor relation. The number of independent parameters is given by the number of times the fully symmetric representation is contained in the direct product of the irreducible representations for two symmetrical second rank tensors. The basis functions for the lower symmetry groups are found from the compatibility relations and are explicitly related to the elastic moduli. These types of symmetry arguments should be generally useful in treating the elastic properties of solids and composites.

Physical Description

Pages: (14 p)

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NTIS, PC A03/MF A01 - OSTI; GPO Dep.

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  • Other: DE91000951
  • Report No.: UCRL-CR-104962
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/6449598 | External Link
  • Office of Scientific & Technical Information Report Number: 6449598
  • Archival Resource Key: ark:/67531/metadc1208569

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Office of Scientific & Technical Information Technical Reports

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  • August 29, 1990

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  • July 5, 2018, 11:11 p.m.

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Dresselhaus, M.S. & Dresselhaus, G. (Massachusetts Inst. of Tech., Cambridge, MA (USA)). Note on sufficient symmetry conditions for isotropy of the elastic moduli tensor, report, August 29, 1990; United States. (digital.library.unt.edu/ark:/67531/metadc1208569/: accessed November 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.