Accession Number : ADA216822


Title :   Second Order Accurate Finite Difference Methods


Descriptive Note : Final rept. 30 Jun 1981-31 Jan 1984,


Corporate Author : GEORGIA INST OF TECH ATLANTA


Personal Author(s) : Hanagud, S.


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA216822


Report Date : 20 AUG 1984


Pagination or Media Count : 15


Abstract : Existing second order accurate finite difference methods have been evaluated for application to finite deformation transient dynamic response problems in solids. A new second order accurate finite difference technique has been developed. This is a two-step technique that can be used with deformable Lagrangian meshes. The technique has been developed by using the concepts of contour differences and MacCormack methods. The second order techniques have been applied to study many problems including dynamic poynting effect problems, interaction of stress waves and cracks, beams, with nonstructured masses and stiffened shells.


Descriptors :   *DYNAMIC RESPONSE , *FINITE DIFFERENCE THEORY , CRACKS , STIFFENING , LAGRANGIAN FUNCTIONS , SOLIDS , MESH , STRESS WAVES , DEFORMATION , INTERACTIONS , SHELLS(STRUCTURAL FORMS)


Subject Categories : THEORETICAL MATHEMATICS
      MECHANICS


Distribution Statement : APPROVED FOR PUBLIC RELEASE