The variational basis for the least-squares field- redistribution of strainFunctions in the finite element formulation of constrained media elasticity

Prathap, Gangan (1988) The variational basis for the least-squares field- redistribution of strainFunctions in the finite element formulation of constrained media elasticity. Technical Report. National Aeronautical Laboratory, Bangalore, India.

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    Abstract

    The field-consistency paradigm offers an useful conceptual scheme to handle problems such as locking, delayed convergence and stress oscillations that frequently haunt the finite element formulation of ,constrained media elasticity. These problems can be overcome by various artifices - such as reduced integration mode decomposition, assumed strain functions etc.In this paper, we provide the variational jcistification for the use of field - redistributed strain functions to replace the strains derived conventionally from dis-placement lunctions, in the constrained energy terms.

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Stress oscillations;Finite element formulation;Constrained media elasticity
    Subjects: ENGINEERING > Structural Mechanics
    Division/Department: Structures Division
    Depositing User: M/S ICAST NAL
    Date Deposited: 11 Aug 2008
    Last Modified: 24 May 2010 09:51
    URI: http://nal-ir.nal.res.in/id/eprint/2851

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